webcit/static/fadeshow.js

   1 /***********************************************
   2 * Ultimate Fade-In Slideshow (v1.51): © Dynamic Drive (http://www.dynamicdrive.com)
   3 * This notice MUST stay intact for legal use
   4 * Visit http://www.dynamicdrive.com/ for this script and 100s more.
   5 ***********************************************/
   6
   7 //SET IMAGE PATHS. Extend or contract array as needed
   8
   9 //var fadeimages2=new Array() //2nd array set example. Remove or add more sets as needed.
  10 //SET IMAGE PATHS. Extend or contract array as needed
  11 //fadeimages2[0]=["../dynamicindex4/bs00825a.gif", "http://www.wired.com", ""]
  12 //fadeimages2[1]=["../dynamicindex4/bs00847a.gif", "http://www.theregister.com", ""]
  13 //fadeimages2[2]=["../dynamicindex4/hh01478a.gif", "http://www.news.com", "_new"]
  14
  15 var fadebgcolor="white"
  16
  17 ////NO need to edit beyond here/////////////
  18
  19 var fadearray=new Array() //array to cache fadeshow instances
  20 var fadeclear=new Array() //array to cache corresponding clearinterval pointers
  21
  22 var dom=(document.getElementById) //modern dom browsers
  23 var iebrowser=document.all
  24
  25 function fadeshow(theimages, fadewidth, fadeheight, borderwidth, delay, pause, displayorder){
  26 this.pausecheck=pause
  27 this.mouseovercheck=0
  28 this.delay=delay
  29 this.degree=10 //initial opacity degree (10%)
  30 this.curimageindex=0
  31 this.nextimageindex=1
  32 fadearray[fadearray.length]=this
  33 this.slideshowid=fadearray.length-1
  34 this.canvasbase="canvas"+this.slideshowid
  35 this.curcanvas=this.canvasbase+"_0"
  36 if (typeof displayorder!="undefined")
  37 theimages.sort(function() {return 0.5 - Math.random();}) //thanks to Mike (aka Mwinter) :)
  38 this.theimages=theimages
  39 this.imageborder=parseInt(borderwidth)
  40 this.postimages=new Array() //preload images
  41 for (p=0;p<theimages.length;p++){
  42 this.postimages[p]=new Image()
  43 this.postimages[p].src=theimages[p][0]
  44 }
  45
  46 var fadewidth=fadewidth+this.imageborder*2
  47 var fadeheight=fadeheight+this.imageborder*2
  48
  49 if (iebrowser&&dom||dom) //if IE5+ or modern browsers (ie: Firefox)
  50 document.write('<div id="master'+this.slideshowid+'" style="position:relative;width:'+fadewidth+'px;height:'+fadeheight+'px;overflow:hidden;"><div id="'+this.canvasbase+'_0" style="position:absolute;width:'+fadewidth+'px;height:'+fadeheight+'px;top:0;left:0;filter:progid:DXImageTransform.Microsoft.alpha(opacity=10);opacity:0.1;-moz-opacity:0.1;-khtml-opacity:0.1;background-color:'+fadebgcolor+'"></div><div id="'+this.canvasbase+'_1" style="position:absolute;width:'+fadewidth+'px;height:'+fadeheight+'px;top:0;left:0;filter:progid:DXImageTransform.Microsoft.alpha(opacity=10);opacity:0.1;-moz-opacity:0.1;-khtml-opacity:0.1;background-color:'+fadebgcolor+'"></div></div>')
  51 else
  52 document.write('<div><img name="defaultslide'+this.slideshowid+'" src="'+this.postimages[0].src+'"></div>')
  53
  54 if (iebrowser&&dom||dom) //if IE5+ or modern browsers such as Firefox
  55 this.startit()
  56 else{
  57 this.curimageindex++
  58 setInterval("fadearray["+this.slideshowid+"].rotateimage()", this.delay)
  59 }
  60 }
  61
  62 function fadepic(obj){
  63 if (obj.degree<100){
  64 obj.degree+=10
  65 if (obj.tempobj.filters&&obj.tempobj.filters[0]){
  66 if (typeof obj.tempobj.filters[0].opacity=="number") //if IE6+
  67 obj.tempobj.filters[0].opacity=obj.degree
  68 else //else if IE5.5-
  69 obj.tempobj.style.filter="alpha(opacity="+obj.degree+")"
  70 }
  71 else if (obj.tempobj.style.MozOpacity)
  72 obj.tempobj.style.MozOpacity=obj.degree/101
  73 else if (obj.tempobj.style.KhtmlOpacity)
  74 obj.tempobj.style.KhtmlOpacity=obj.degree/100
  75 else if (obj.tempobj.style.opacity&&!obj.tempobj.filters)
  76 obj.tempobj.style.opacity=obj.degree/101
  77 }
  78 else{
  79 clearInterval(fadeclear[obj.slideshowid])
  80 obj.nextcanvas=(obj.curcanvas==obj.canvasbase+"_0")? obj.canvasbase+"_0" : obj.canvasbase+"_1"
  81 obj.tempobj=iebrowser? iebrowser[obj.nextcanvas] : document.getElementById(obj.nextcanvas)
  82 obj.populateslide(obj.tempobj, obj.nextimageindex)
  83 obj.nextimageindex=(obj.nextimageindex<obj.postimages.length-1)? obj.nextimageindex+1 : 0
  84 setTimeout("fadearray["+obj.slideshowid+"].rotateimage()", obj.delay)
  85 }
  86 }
  87
  88 fadeshow.prototype.populateslide=function(picobj, picindex){
  89 var slideHTML=""
  90 if (this.theimages[picindex][1]!="") //if associated link exists for image
  91 slideHTML='<a href="'+this.theimages[picindex][1]+'" target="'+this.theimages[picindex][2]+'">'
  92 slideHTML+='<img src="'+this.postimages[picindex].src+'" border="'+this.imageborder+'px">'
  93 if (this.theimages[picindex][1]!="") //if associated link exists for image
  94 slideHTML+='</a>'
  95 picobj.innerHTML=slideHTML
  96 }
  97
  98
  99 fadeshow.prototype.rotateimage=function(){
 100 if (this.pausecheck==1) //if pause onMouseover enabled, cache object
 101 var cacheobj=this
 102 if (this.mouseovercheck==1)
 103 setTimeout(function(){cacheobj.rotateimage()}, 100)
 104 else if (iebrowser&&dom||dom){
 105 this.resetit()
 106 var crossobj=this.tempobj=iebrowser? iebrowser[this.curcanvas] : document.getElementById(this.curcanvas)
 107 crossobj.style.zIndex++
 108 fadeclear[this.slideshowid]=setInterval("fadepic(fadearray["+this.slideshowid+"])",50)
 109 this.curcanvas=(this.curcanvas==this.canvasbase+"_0")? this.canvasbase+"_1" : this.canvasbase+"_0"
 110 }
 111 else{
 112 var ns4imgobj=document.images['defaultslide'+this.slideshowid]
 113 ns4imgobj.src=this.postimages[this.curimageindex].src
 114 }
 115 this.curimageindex=(this.curimageindex<this.postimages.length-1)? this.curimageindex+1 : 0
 116 }
 117
 118 fadeshow.prototype.resetit=function(){
 119 this.degree=10
 120 var crossobj=iebrowser? iebrowser[this.curcanvas] : document.getElementById(this.curcanvas)
 121 if (crossobj.filters&&crossobj.filters[0]){
 122 if (typeof crossobj.filters[0].opacity=="number") //if IE6+
 123 crossobj.filters(0).opacity=this.degree
 124 else //else if IE5.5-
 125 crossobj.style.filter="alpha(opacity="+this.degree+")"
 126 }
 127 else if (crossobj.style.MozOpacity)
 128 crossobj.style.MozOpacity=this.degree/101
 129 else if (crossobj.style.KhtmlOpacity)
 130 crossobj.style.KhtmlOpacity=this.degree/100
 131 else if (crossobj.style.opacity&&!crossobj.filters)
 132 crossobj.style.opacity=this.degree/101
 133 }
 134
 135
 136 fadeshow.prototype.startit=function(){
 137 var crossobj=iebrowser? iebrowser[this.curcanvas] : document.getElementById(this.curcanvas)
 138 this.populateslide(crossobj, this.curimageindex)
 139 if (this.pausecheck==1){ //IF SLIDESHOW SHOULD PAUSE ONMOUSEOVER
 140 var cacheobj=this
 141 var crossobjcontainer=iebrowser? iebrowser["master"+this.slideshowid] : document.getElementById("master"+this.slideshowid)
 142 crossobjcontainer.onmouseover=function(){cacheobj.mouseovercheck=1}
 143 crossobjcontainer.onmouseout=function(){cacheobj.mouseovercheck=0}
 144 }
 145 this.rotateimage()
 146 }
 147