/*==================================================*
 $Id: slideshow.js,v 1.16 2003/10/14 12:39:00 pat Exp $
 Copyright 2000-2003 Patrick Fitzgerald
 http://slideshow.barelyfitz.com/

 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *==================================================*/

// There are two objects defined in this file:
// "slide" - contains all the information for a single slide
// "slideshow" - consists of multiple slide objects and runs the slideshow

//==================================================
// slide object
//==================================================
function slide(src,link,text,target,attr) {
  // This is the constructor function for the slide object.
  // It is called automatically when you create a new slide object.
  // For example:
  // s = new slide();

  // Image URL
  this.src = src;
   
  // Link URL
  this.link = link;

  // Text to display
  this.text = text;

  // Name of the target window ("_blank")
  this.target = target;

  // Custom duration for the slide, in milliseconds.
  // This is an optional parameter.
  // this.timeout = 3000

  // Attributes for the target window:
  // width=n,height=n,resizable=yes or no,scrollbars=yes or no,
  // toolbar=yes or no,location=yes or no,directories=yes or no,
  // status=yes or no,menubar=yes or no,copyhistory=yes or no
  // Example: "width=200,height=300"
  this.attr = attr;

  // Create an image object for the slide
  if (document.images) {
    this.image = new Image();
  }

  // Flag to tell when load() has already been called
  this.loaded = false;
  
  //--------------------------------------------------
  this.load = function() {
    // This method loads the image for the slide

    if (!document.images) { return; }

    if (!this.loaded) {
     // alert(this.src);
     
      this.image.src = this.src;
      //if(this.image.height>300){
        //this.image.height=300;
     // }
      //if(this.image.width>300){
       // this.image.width=300;
      //}
      //alert(this.image.width+"  "+this.image.height);
      //this.text=this.title;
      if(this.image.width==0||this.image.height==0){
        this.loaded = true;
      }else{
         this.loaded = true;
      }
    }
  }

  //--------------------------------------------------
  this.hotlink = function() {
    // This method jumps to the slide's link.
    // If a window was specified for the slide, then it opens a new window.

    var mywindow;

    // If this slide does not have a link, do nothing
    if (!this.link) return;

    // Open the link in a separate window?
    if (this.target) {

      // If window attributes are specified,
      // use them to open the new window
      if (this.attr) {
        mywindow = window.open(this.link, this.target, this.attr);
  
      } else {
        // If window attributes are not specified, do not use them
        // (this will copy the attributes from the originating window)
        mywindow = window.open(this.link, this.target);
      }

      // Pop the window to the front
      if (mywindow && mywindow.focus) mywindow.focus();

    } else {
      // Open the link in the current window
      location.href = this.link;
    }
  }
}

//==================================================
// slideshow object
//==================================================
function slideshow( slideshowname ) {
  // This is the constructor function for the slideshow object.
  // It is called automatically when you create a new object.
  // For example:
  // ss = new slideshow("ss");

  // Name of this object
  // (required if you want your slideshow to auto-play)
  // For example, "SLIDES1"
  this.name = slideshowname;

  // When we reach the last slide, should we loop around to start the
  // slideshow again?
  this.repeat = true;

  // Number of images to pre-fetch.
  // -1 = preload all images.
  //  0 = load each image is it is used.
  //  n = pre-fetch n images ahead of the current image.
  // I recommend preloading all images unless you have large
  // images, or a large amount of images.
  this.prefetch = -1;

  // IMAGE element on your HTML page.
  // For example, document.images.SLIDES1IMG
  this.image;

  // ID of a DIV element on your HTML page that will contain the text.
  // For example, "slides2text"
  // Note: after you set this variable, you should call
  // the update() method to update the slideshow display.
  this.textid;

  // TEXTAREA element on your HTML page.
  // For example, document.SLIDES1FORM.SLIDES1TEXT
  // This is a depracated method for displaying the text,
  // but you might want to supply it for older browsers.
  this.textarea;
  this.from;
  this.OutContent;
  // Milliseconds to pause between slides.
  // Individual slides can override this.
  this.timeout = 3000;

  // Hook functions to be called before and after updating the slide
  // this.pre_update_hook = function() { }
  // this.post_update_hook = function() { }

  // These are private variables
  this.slides = new Array();
  this.current = 0;
  this.timeoutid = 0;

  //--------------------------------------------------
  // Public methods
  //--------------------------------------------------
  this.add_slide = function(slide) {
    // Add a slide to the slideshow.
    // For example:
    // SLIDES1.add_slide(new slide("s1.jpg", "link.html"))
  
    var i = this.slides.length;
  
    // Prefetch the slide image if necessary
    if (this.prefetch == -1) {
      slide.load();
    }

    this.slides[i] = slide;
  }

  //--------------------------------------------------
  this.play = function(timeout) {
    // This method implements the automatically running slideshow.
    // If you specify the "timeout" argument, then a new default
    // timeout will be set for the slideshow.
    
    // Make sure we're not already playing
    this.pause();
  
    // If the timeout argument was specified (optional)
    // then make it the new default
    if (timeout) {
      this.timeout = timeout;
    }
  
    // If the current slide has a custom timeout, use it;
    // otherwise use the default timeout
    if (typeof this.slides[ this.current ].timeout != 'undefined') {
      timeout = this.slides[ this.current ].timeout;
    } else {
      timeout = this.timeout;
    }
   // alert(timeout+"  "+this.from)
    // this.image.style.visibility="visible";
    // After the timeout, call this.loop()
   // alert("JMtotalSlidshow."+this.name);
    this.timeoutid = setTimeout( "JMtotalSlidshow."+this.name + ".loop()", timeout);
  }

  //--------------------------------------------------
  this.pause = function() {
    // This method stops the slideshow if it is automatically running.
  
    if (this.timeoutid != 0) {

      clearTimeout(this.timeoutid);
      this.timeoutid = 0;

    }
  }

  //--------------------------------------------------
  this.update = function() {
     
    // This method updates the slideshow image on the page
    // Make sure the slideshow has been initialized correctly
    if (! this.valid_image()) { return; }
    // Call the pre-update hook function if one was specified
    if (typeof this.pre_update_hook == 'function') {
      this.pre_update_hook();
    }

    // Convenience variable for the current slide
    var slide = this.slides[ this.current ];

    // Determine if the browser supports filters
    var dofilter = false;
    if (this.image &&
        typeof this.image.filters != 'undefined' &&
        typeof this.image.filters[0] != 'undefined') {

      dofilter = true;

    }
    try{
    // Load the slide image if necessary
    slide.load();
   }catch(err){}
    // Apply the filters for the image transition
    if (dofilter) {

      // If the user has specified a custom filter for this slide,
      // then set it now
      if (slide.filter &&
          this.image.style &&
          this.image.style.filter) {

        this.image.style.filter = slide.filter;

      }
      this.image.filters[0].Apply();
    }

    // Update the image.
   
   // this.image.height="300";
 //   this.image.width="300";
 
    
    this.image.src = slide.image.src;
    var maxWidth=450;
    var maxHeight=450;
    if(this.from=="myFavPhoto"){
        maxWidth=450;
        maxHeight=450;
    }
   // alert(this.image.src+"    "+this.from);
  //  alert(slide.image.width+"   "+slide.image.height+"   "+this.image.width+"    "+this.image.height);
    //this.image.removeAttribute('height');
   // this.image.removeAttribute('width');
     //alert(slide.image.width+"   "+slide.image.height+"   slide.image.width="+this.image.width+"    "+this.image.height);
      
       // alert("this.image.width"+this.image.width)
        if(slide.image.width>maxWidth || slide.image.height>maxHeight){
            
            if(slide.image.width>slide.image.height){
              
                this.image.style.width=maxWidth+"px";
                var ratio=maxWidth/parseInt(slide.image.width);
                //alert(ratio+"  "+parseInt(slide.image.height)*ratio);
                this.image.style.height=parseInt(slide.image.height)*ratio+"px";
             }else{
                 this.image.style.height=maxHeight+"px";
                 var ratio=maxHeight/parseInt(slide.image.height);
                 this.image.style.width=parseInt(slide.image.width)*ratio+"px";   
             }
             
         }else{
            this.image.style.width=slide.image.width+"px";
            this.image.style.height=slide.image.height+"px";
            
         }
        
      if(this.from=="myFavPhoto"){
        try{
         var fav=document.getElementById(this.OutContent);
         var minWidth=150;
         if(parseInt(this.image.style.width)+20>minWidth){
            minWidth=parseInt(this.image.style.width)+20;
         }
         fav.style.height=parseInt(this.image.style.height)+60+"px";
         fav.style.width=minWidth+"px";
        }catch(err){}
      }

    // Play the image transition filters
    if (dofilter) {
      this.image.filters[0].Play();
    }

    // Update the text
    this.display_text();

    // Call the post-update hook function if one was specified
    if (typeof this.post_update_hook == 'function') {
      this.post_update_hook();
    }

    // Do we need to pre-fetch images?
    if (this.prefetch > 0) {

      var next, prev, count;

      // Pre-fetch the next slide image(s)
      next = this.current;
      prev = this.current;
      count = 0;
      do {

        // Get the next and previous slide number
        // Loop past the ends of the slideshow if necessary
        if (++next >= this.slides.length) next = 0;
        if (--prev < 0) prev = this.slides.length - 1;

        // Preload the slide image
        this.slides[next].load();
        this.slides[prev].load();

        // Keep going until we have fetched
        // the designated number of slides

      } while (++count < this.prefetch);
    }
  }

  //--------------------------------------------------
  this.goto_slide = function(n) {
    // This method jumpts to the slide number you specify.
    // If you use slide number -1, then it jumps to the last slide.
    // You can use this to make links that go to a specific slide,
    // or to go to the beginning or end of the slideshow.
    // Examples:
    // onClick="myslides.goto_slide(0)"
    // onClick="myslides.goto_slide(-1)"
    // onClick="myslides.goto_slide(5)"
  
    if (n == -1) {
      n = this.slides.length - 1;
    }
  
    if (n < this.slides.length && n >= 0) {
      this.current = n;
    }
  
    this.update();
  }


  //--------------------------------------------------
  this.goto_random_slide = function(include_current) {
    // Picks a random slide (other than the current slide) and
    // displays it.
    // If the include_current parameter is true,
    // then 
    // See also: shuffle()

    var i;

    // Make sure there is more than one slide
    if (this.slides.length > 1) {

      // Generate a random slide number,
      // but make sure it is not the current slide
      do {
        i = Math.floor(Math.random()*this.slides.length);
      } while (i == this.current);
 
      // Display the slide
      this.goto_slide(i);
    }
  }


  //--------------------------------------------------
  this.next = function() {
    // This method advances to the next slide.

    // Increment the image number
    if (this.current < this.slides.length - 1) {
      this.current++;
    } else if (this.repeat) {
      this.current = 0;
    }

    this.update();
  }


  //--------------------------------------------------
  this.previous = function() {
    // This method goes to the previous slide.
  
    // Decrement the image number
    if (this.current > 0) {
      this.current--;
    } else if (this.repeat) {
      this.current = this.slides.length - 1;
    }
  
    this.update();
  }


  //--------------------------------------------------
  this.shuffle = function() {
    // This method randomly shuffles the order of the slides.

    var i, i2, slides_copy, slides_randomized;

    // Create a copy of the array containing the slides
    // in sequential order
    slides_copy = new Array();
    for (i = 0; i < this.slides.length; i++) {
      slides_copy[i] = this.slides[i];
    }

    // Create a new array to contain the slides in random order
    slides_randomized = new Array();

    // To populate the new array of slides in random order,
    // loop through the existing slides, picking a random
    // slide, removing it from the ordered list and adding it to
    // the random list.

    do {

      // Pick a random slide from those that remain
      i = Math.floor(Math.random()*slides_copy.length);

      // Add the slide to the end of the randomized array
      slides_randomized[ slides_randomized.length ] =
        slides_copy[i];

      // Remove the slide from the sequential array,
      // so it cannot be chosen again
      for (i2 = i + 1; i2 < slides_copy.length; i2++) {
        slides_copy[i2 - 1] = slides_copy[i2];
      }
      slides_copy.length--;

      // Keep going until we have removed all the slides

    } while (slides_copy.length);

    // Now set the slides to the randomized array
    this.slides = slides_randomized;
  }


  //--------------------------------------------------
  this.get_text = function() {
    // This method returns the text of the current slide
  
    return(this.slides[ this.current ].text);
  }


  //--------------------------------------------------
  this.get_all_text = function(before_slide, after_slide) {
    // Return the text for all of the slides.
    // For the text of each slide, add "before_slide" in front of the
    // text, and "after_slide" after the text.
    // For example:
    // document.write("<ul>");
    // document.write(s.get_all_text("<li>","\n"));
    // document.write("<\/ul>");
  
    all_text = "";
  
    // Loop through all the slides in the slideshow
    for (i=0; i < this.slides.length; i++) {
  
      slide = this.slides[i];
    
      if (slide.text) {
        all_text += before_slide + slide.text + after_slide;
      }
  
    }
  
    return(all_text);
  }


  //--------------------------------------------------
  this.display_text = function(text) {
    // Display the text for the current slide
  
    // If the "text" arg was not supplied (usually it isn't),
    // get the text from the slideshow
    if (!text) {
      text = this.slides[ this.current ].text;
    }
  
    // If a textarea has been specified,
    // then change the text displayed in it
    if (this.textarea && typeof this.textarea.value != 'undefined') {
      this.textarea.value = text;
    }

    // If a text id has been specified,
    // then change the contents of the HTML element
    if (this.textid) {

      r = this.getElementById(this.textid);
      if (!r) { return false; }
      if (typeof r.innerHTML == 'undefined') { return false; }

      // Update the text
      r.innerHTML = text;
    }
  }


  //--------------------------------------------------
  this.hotlink = function() {
    // This method calls the hotlink() method for the current slide.
  
    this.slides[ this.current ].hotlink();
  }


  //--------------------------------------------------
  this.save_position = function(cookiename) {
    // Saves the position of the slideshow in a cookie,
    // so when you return to this page, the position in the slideshow
    // won't be lost.
  
    if (!cookiename) {
      cookiename = this.name + '_slideshow';
    }
  
    document.cookie = cookiename + '=' + this.current;
  }


  //--------------------------------------------------
  this.restore_position = function(cookiename) {
  // If you previously called slideshow_save_position(),
  // returns the slideshow to the previous state.
  
    //Get cookie code by Shelley Powers
  
    if (!cookiename) {
      cookiename = this.name + '_slideshow';
    }
  
    var search = cookiename + "=";
  
    if (document.cookie.length > 0) {
      offset = document.cookie.indexOf(search);
      // if cookie exists
      if (offset != -1) { 
        offset += search.length;
        // set index of beginning of value
        end = document.cookie.indexOf(";", offset);
        // set index of end of cookie value
        if (end == -1) end = document.cookie.length;
        this.current = parseInt(unescape(document.cookie.substring(offset, end)));
        }
     }
  }


  //--------------------------------------------------
  this.noscript = function() {
    // This method is not for use as part of your slideshow,
    // but you can call it to get a plain HTML version of the slideshow
    // images and text.
    // You should copy the HTML and put it within a NOSCRIPT element, to
    // give non-javascript browsers access to your slideshow information.
    // This also ensures that your slideshow text and images are indexed
    // by search engines.
  
    $html = "\n";
  
    // Loop through all the slides in the slideshow
    for (i=0; i < this.slides.length; i++) {
  
      slide = this.slides[i];
  
      $html += '<P>';
  
      if (slide.link) {
        $html += '<a href="' + slide.link + '">';
      }
     
      $html += '<img onload=\"eiuooConstrainImageProportionComp(this,100,100)\"  src="' + slide.src + '" ALT="slideshow image">';
  
      if (slide.link) {
        $html += "<\/a>";
      }
  
      if (slide.text) {
        $html += "<BR>\n" + slide.text;
      }
  
      $html += "<\/P>" + "\n\n";
    }
  
    // Make the HTML browser-safe
    $html = $html.replace(/\&/g, "&amp;" );
    $html = $html.replace(/</g, "&lt;" );
    $html = $html.replace(/>/g, "&gt;" );  
    return('<pre>' + $html + '</pre>');
  }


  //==================================================
  // Private methods
  //==================================================

  //--------------------------------------------------
  this.loop = function() {
    // This method is for internal use only.
    // This method gets called automatically by a JavaScript timeout.
    // It advances to the next slide, then sets the next timeout.
    // If the next slide image has not completed loading yet,
    // then do not advance to the next slide yet.

    // Make sure the next slide image has finished loading
    if (this.current < this.slides.length - 1) {
      next_slide = this.slides[this.current + 1];
      if (next_slide.image.complete == null || next_slide.image.complete) {
        this.next();
      }else{
        this.next();
      }
    } else { // we're at the last slide
      this.next();
    }
   //  this.image.className="eiuooUserPageMyPhotoSlideSreenHeight";
    // Keep playing the slideshow
    this.play( );
  }


  //--------------------------------------------------
  this.valid_image = function() {
    // Returns 1 if a valid image has been set for the slideshow
     //alert(this.image+ " "+this.from);
    if (!this.image)
    {
      
      return false;
    }
    else {
      return true;
    }
  }

  //--------------------------------------------------
  this.getElementById = function(element_id) {
    // This method returns the element corresponding to the id

    if (document.getElementById) {
      return document.getElementById(element_id);
    }
    else if (document.all) {
      return document.all[element_id];
    }
    else if (document.layers) {
      return document.layers[element_id];
    } else {
      return undefined;
    }
  }
  

  //==================================================
  // Deprecated methods
  // I don't recommend the use of the following methods,
  // but they are included for backward compatibility.
  // You can delete them if you don't need them.
  //==================================================

  //--------------------------------------------------
  this.set_image = function(imageobject) {
    // This method is deprecated; you should use
    // the following code instead:
    // s.image = document.images.myimagename;
    // s.update();

    if (!document.images)
      return;
    this.image = imageobject;
  }

  //--------------------------------------------------
  this.set_textarea = function(textareaobject) {
    // This method is deprecated; you should use
    // the following code instead:
    // s.textarea = document.form.textareaname;
    // s.update();

    this.textarea = textareaobject;
    this.display_text();
  }

  //--------------------------------------------------
  this.set_textid = function(textidstr) {
    // This method is deprecated; you should use
    // the following code instead:
    // s.textid = "mytextid";
    // s.update();

    this.textid = textidstr;
    this.display_text();
  }
}

function JMSlideShowGateway(imgs,sender,txtcon)
{
    if(eval("JMtotalSlidshow.ss"+sender.id)!=undefined)
    {
        return;
    }
    var img=imgs.split("|");
    //alert(imgs);
    var imgarr=new Array();
    var i;
    for(i=0;i<img.length;i++)
    {
        var obj=new  Object();
        obj.imgurl=imgurl+"Plants/"+img[i];
        obj.text="";
        obj.link="";
        obj.title="";
        imgarr.push(obj);
    }
    //alert(sender.id);
    JMShowSlideContent(imgarr,sender,txtcon,sender.id);
    //alert("adddfiin");
    //alert(eval("JMtotalSlidshow.ss"+sender.id));
    if(eval("JMtotalSlidshow.ss"+sender.id))
    {
        var current=eval("JMtotalSlidshow.ss"+sender.id);
        current.play();
        
    }
}
var JMtotalSlidshow=new Object();
function JMShowSlideControl(sender,mode,id)
{
   
     if(eval("JMtotalSlidshow.ss"+id))
    {
        var current=eval("JMtotalSlidshow.ss"+id);
        var stopplayctrl=document.getElementById("ctrlPlayAndStop"+id);       
        if(mode=="pre")
        {
            current.pause();
            stopplayctrl.src=imgurl+"jamieDuries/play.png";
            current.previous();
            
        }
        else if(mode=="next")
        {   
            current.pause();
            stopplayctrl.src=imgurl+"jamieDuries/play.png";
            current.next();
        }
        else if(mode=="stop")
        {
          //  alert(current.timeoutid==0);
            if(current.timeoutid==0)
            {   
                stopplayctrl.src=imgurl+"jamieDuries/pause.png";
                current.play();
                current.next();
            }
            else
            {
                stopplayctrl.src=imgurl+"jamieDuries/play.png";
                current.pause();
            }
        }
    }
}
function JMShowSlideContent(SlideImages,imgcon,txtcon,id){
	   
	   if(SlideImages!=null){
	    if(SlideImages.length>0 ){
         var name="ss"+id;	
        // alert(name);    
         var evalstr="var   "+ name+"=new slideshow(\""+name+"\")";
         //alert(evalstr);
         eval(evalstr); 
        // alert(eval(name));
	     var currentss;
	     eval("currentss="+name);
       
		
		 currentsspost_update_hook = function() {
  								return;
		} 
		eval("JMtotalSlidshow."+name+"=currentss");
		currentss.from="myphoto";	
	    currentss.OutContent="myPhotos";	    	
			var  items=SlideImages;
			totalImgGalleryImgs=items.length;
			 var i;
			 for(i=0;i<items.length;i++){
				 var obj=SlideImages[i];
				 s=new slide();
				 var trueUrl=obj.imgurl
				 //alert(trueUrl);
				 s.src=trueUrl;
				 //alert(s.src);
				 s.link=trueUrl;
				 s.title=obj.title;
				 s.text=obj.title;
				 currentss.add_slide(s);
			 }

        for (var i=0; i < currentss.slides.length; i++) {
            var ssImg=imgcon
            if(ssImg){
                ssImg.style.display="block";
            }
        	s = currentss.slides[i];
        }
        	//ss.textarea =document.getElementById("ss_textarea");
			//alert(ss.textarea.id);
		currentss.pre_update_hook = function() {
 					fadein(id,0.04);
		}

        if (document.images) {
	        currentss.image = imgcon;
		    currentss.textid = txtcon;
  			currentss.update();
  		 
		}
		 
	    }else{
	      return ;
	    }
		}
		 
		 
} 
var fadein_opacity = 0.04;
function fadein(id,opacity) {
  var fadein_img=document.getElementById(id);
  if (typeof opacity != 'undefined') { fadein_opacity = opacity; }
  if (fadein_opacity < 0.99 && fadein_img && fadein_img.style &&
      typeof fadein_img.style.MozOpacity != 'undefined') {

    fadein_opacity += .05;
    fadein_img.style.MozOpacity = fadein_opacity;
    setTimeout("fadein('"+id+"')", 50);
  }
}