半透明图片水平淡入淡出切换_图片特效特效

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JavaScript控制图片水平淡入淡出切换，同时实现图片的半透明效果，修改一下就可以变成一个图片幻灯了。

<html>
<head>
<title>图片水平淡入淡出切换</title>
</head>
<body>
<table align=center cellpadding=0 cellspacing=0 border=0>
  <tr>
    <td  align="center" valign="middle">
<SCRIPT LANGUAGE="javascript">
var trans_width='150px'
var trans_height='90px'
var pause=3000
var degree=10
var slideshowmrc=new Array()
slideshowmrc[0]=["/jscss/demoimg/wall_s1.jpg"]
slideshowmrc[1]=["/jscss/demoimg/wall_s2.jpg"]
slideshowmrc[2]=["/jscss/demoimg/wall_s3.jpg"]
slideshowmrc[3]=["/jscss/demoimg/wall_s4.jpg"]
slideshowmrc[4]=["/jscss/demoimg/wall_s5.jpg"]
var bgcolor='white'
var imageholder=new Array()
for (i=0;i<slideshowmrc.length;i++){
imageholder[i]=new Image()
imageholder[i].src=slideshowmrc[i][0]
}
var ie4=document.all
var dom=document.getElementById&&navigator.userAgent.indexOf("Opera")==-1
if (ie4||dom)
document.write('<div style="position:relative;width:'+trans_width+';height:'+trans_height+';overflow:hidden"><div id="canvas0" style="position:absolute;background-color:'+bgcolor+';width:'+trans_width+';height:'+trans_height+';left:-'+trans_width+';filter:alpha(opacity=20);-moz-opacity:0.2;"></div><div id="canvas1" style="position:absolute;background-color:'+bgcolor+';width:'+trans_width+';height:'+trans_height+';left:-'+trans_width+';filter:alpha(opacity=20);-moz-opacity:0.2;"></div></div>')
else if (document.layers){
document.write('<ilayer id=tickernsmain visibility=hide width='+trans_width+' height='+trans_height+' bgColor='+bgcolor+'><layer id=tickernssub width='+trans_width+' height='+trans_height+' left=0 top=0>'+'<img src="http://p1.mb5u.com/texiao/1/20110225160500263" onload="return imgzoom(this,600);" onclick="javascript:window.open(this.src);" style="cursor:pointer;"/></layer></ilayer>')
}
var curpos=trans_width*(-1)
var curcanvas="canvas0"
var curindex=0
var nextindex=1
function getslidehtml(theslide){
var slidehtml=""
slidehtml+='<img src="http://p1.mb5u.com/texiao/1/20110225160500264" border="0" onload="return imgzoom(this,600);" onclick="javascript:window.open(this.src);" style="cursor:pointer;"/>'
return slidehtml
}
function moveslide(){
if (curpos<0){
curpos=Math.min(curpos+degree,0)
tempobj.style.left=curpos+"px"
}
else{
clearInterval(dropslide)
if (crossobj.filters)
crossobj.filters.alpha.opacity=100
else if (crossobj.style.MozOpacity)
crossobj.style.MozOpacity=1
nextcanvas=(curcanvas=="canvas0")? "canvas0" : "canvas1"
tempobj=ie4? eval("document.all."+nextcanvas) : document.getElementById(nextcanvas)
tempobj.innerHTML=getslidehtml(slideshowmrc[curindex])
nextindex=(nextindex<slideshowmrc.length-1)? nextindex+1 : 0
setTimeout("rotateslide()",pause)
}

}
function rotateslide(){
if (ie4||dom){
resetit(curcanvas)
crossobj=tempobj=ie4? eval("document.all."+curcanvas) : document.getElementById(curcanvas)
crossobj.style.zIndex++
if (crossobj.filters)
document.all.canvas0.filters.alpha.opacity=document.all.canvas1.filters.alpha.opacity=20
else if (crossobj.style.MozOpacity)
document.getElementById("canvas0").style.MozOpacity=document.getElementById("canvas1").style.MozOpacity=0.2
var temp='setInterval("moveslide()",50)'
dropslide=eval(temp)
curcanvas=(curcanvas=="canvas0")? "canvas1" : "canvas0"
}
else if (document.layers){
crossobj.document.write(getslidehtml(slideshowmrc[curindex]))
crossobj.document.close()
}
curindex=(curindex<slideshowmrc.length-1)? curindex+1 : 0
}
function jumptoslide(which){
curindex=which
rotateslide()
}
function resetit(what){
curpos=parseInt(trans_width)*(-1)
var crossobj=ie4? eval("document.all."+what) : document.getElementById(what)
crossobj.style.left=curpos+"px"
}
function startit(){
crossobj=ie4? eval("document.all."+curcanvas) : dom? document.getElementById(curcanvas) : document.tickernsmain.document.tickernssub
if (ie4||dom){
crossobj.innerHTML=getslidehtml(slideshowmrc[curindex])
rotateslide()
}
else{
document.tickernsmain.visibility='show'
curindex++
setInterval("rotateslide()",pause)
}
}
if (window.addEventListener)
window.addEventListener("load", startit, false)
else if (window.attachEvent)
window.attachEvent("onload", startit)
else if (ie4||dom||document.layers)
window.onload=startit
</SCRIPT>
    </td>
  </tr>
</table>
</body>
</html>

所属频道：图片特效特效/更新时间：2012-12-11

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