向上收缩并隐藏的Fash广告代码 dn001 2009-06-21 08:17:28 <!-- http://www.knowsky.com --> <!-- bbs http://bbs.knowsky.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--> <STYLE> .spanstyle { LEFT: -5000px; POSITION: absolute } </STYLE> <script> <!-- var imgwidth=468 var imgheight=120 var imgurl=new Array() imgurl[0]="http://www.knowsky.com/images/logo.gif" imgurl[1]="http://www.knowsky.com/images/12090.gif" imgurl[2]="http://www.knowsky.com/images/shangye.jpg" var imgpreload=new Array() for (i=0;i<=imgurl.length-1;i++) { imgpreload[i]=new Image() imgpreload[i].src=imgurl[i] } var x_finalpos=300 var y_finalpos=200 var x_slices=8 var y_slices=3 var pause=10 var screenwidth=800 var screenheight=500 var x_step=new Array() var y_step=new Array() var x_randompos=0 var y_randompos=0 var i_loop=0 var max_loop=20 var i_image=0 var width_slice=Math.floor(imgwidth/x_slices) var height_slice=Math.floor(imgheight/y_slices) var cliptop=0 var clipbottom=height_slice var clipleft=0 var clipright=width_slice var spancounter=0 function initiate() { cliptop=0 clipbottom=height_slice clipleft=0 clipright=width_slice i_loop=0 spancounter=0 if (document.all) { for (i=0;i<=y_slices-1;i++) { for (ii=0;ii<=x_slices-1;ii++) { var thisspan=eval("document.all.span"+spancounter+".style") x_randompos=Math.ceil(screenwidth*Math.random()) y_randompos=Math.ceil(screenheight*Math.random()) thisspan.posLeft=x_randompos thisspan.posTop=y_randompos thisspan.clip ="rect("+cliptop+" "+clipright+" "+clipbottom+" "+clipleft+")" clipleft+=width_slice clipright+=width_slice spancounter++ } clipleft=0 clipright=width_slice cliptop+=height_slice clipbottom+=height_slice } } explode_IE() } function changeimage() { spancounter=0 for (i=0;i<=y_slices-1;i++) { for (ii=0;ii<=x_slices-1;ii++) { var thisspan=eval("document.all.span"+spancounter+".style") thisspan.posLeft=-5000 thisspan.posTop=-5000 spancounter++ } } spancounter=0 if (i_image>imgurl.length-1) {i_image=0} for (i=0;i<=y_slices-1;i++) { for (ii=0;ii<=x_slices-1;ii++) { var thisinnerspan=eval("span"+spancounter) thisinnerspan.innerHTML="<img src='"+imgurl[i_image]+"'>" spancounter++ } } i_image++ initiate() } function explode_IE() { spancounter=0 if (i_loop<=max_loop-1) { for (i=0;i<=y_slices-1;i++) { for (ii=0;ii<=x_slices-1;ii++) { var thisspan=eval("document.all.span"+spancounter+".style") x_step[spancounter]=(x_finalpos-thisspan.posLeft)/(max_loop-i_loop) y_step[spancounter]=(y_finalpos-thisspan.posTop)/(max_loop-i_loop) thisspan.posLeft+=x_step[spancounter] thisspan.posTop+=y_step[spancounter] spancounter++ } } i_loop++ var timer=setTimeout("explode_IE()",pause) } else { spancounter=0 clearTimeout(timer) var timer=setTimeout("changeimage()",2000) } } --> </script> <script> <!-- if (document.all) { for (i=0;i<=y_slices-1;i++) { for (ii=0;ii<=x_slices-1;ii++) { document.write("<span id='span"+spancounter+"' class='spanstyle'></span>") spancounter++ } } spancounter=0 } --> </script> <!--第二步：把“onload=changeimage()”加在<body>标记里 例如：--> <body onload=changeimage()>
