有什么问题请到评论中发表<br> <!-- http://www.mb5u.com --> <!-- bbs http://wWw.mb5u.com --> <!--要完成此效果需要两个步骤 第一步：把如下代码加入到<body>区域中--> <script> <!-- var imageheight=280 var imagewidth=560 var cliptop var clipbottom var clipleft var clipright var clippoints var tempo=100 var stepx=0 var stepy=0 var timer function setValues() { if (document.all) { document.all.image.style.posLeft=0 document.all.image.style.posTop=0 document.all.imagecontent.style.posLeft=0 document.all.imagecontent.style.posTop=0 moveimage() } } function moveimage() { if (stepx<=imagewidth || stepy<=imageheight) { stepx=stepx+12 stepy=stepy+6 image.innerHTML=\"<span style='width:\"+stepx+\"px; height:\"+stepy+\"px;background-color:000000;filter:alpha(opacity=0,finishopacity=100,style=2'></span>\" cliptop=0 clipbottom=stepy clipleft=0 clipright=stepx clippoints=\"rect(\"+cliptop+\" \"+clipright+\" \"+clipbottom+\" \"+clipleft+\")\" document.all.imagecontent.style.clip=clippoints timer=setTimeout(\"moveimage()\",tempo) } else{ clearTimeout(timer) timer=setTimeout(\"moveimage2()\",tempo) } } function moveimage2() { if (stepx>=0 || stepy>=0) { stepx=stepx-12 stepy=stepy-6 image.innerHTML=\"<span style='width:\"+stepx+\"px; height:\"+stepy+\"px;background-color:000000;filter:alpha(opacity=0,finishopacity=100,style=2'></span>\" cliptop=0 clipbottom=stepy clipleft=0 clipright=stepx clippoints=\"rect(\"+cliptop+\" \"+clipright+\" \"+clipbottom+\" \"+clipleft+\")\" document.all.imagecontent.style.clip=clippoints timer=setTimeout(\"moveimage2()\",tempo) } else{ stepx=0 stepy=0 clearTimeout(timer) timer=setTimeout(\"moveimage()\",tempo) } } --> </script> <DIV id=imagecontent style=\"LEFT: -5000px; POSITION: absolute; TOP: -5000px\"><IMG height=421 src=\"http://www.mb5u.com/images/12090.gif\" width=735></DIV> <DIV id=image style=\"POSITION: absolute; TOP: -50px\"></DIV> <!--第二步：把“onload=setValues()”加在<body>标记里 例如：--> <body onload=setValues()>
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