語法說明：
在 style="background-color: #FF00FF" 中修改四方條的顏色
在 var speed=20 中修改特效的速度，數值越大越快，越小越慢
<!--四方開啟視窗_開始--> <style> <!-- .intro{ position:absolute; left:0; top:0; } --> </style> <div id="i1" class="intro" style="background-color: #FF00FF"></div> <script language="JavaScript"> <!-- var speed=20 if (document.layers){ var reference=window.innerWidth/window.innerHeight var temp=eval("document.i1.clip") temp.left=temp.top=0 temp.right=window.innerWidth temp.bottom=window.innerHeight } else if (document.all){ var reference=document.body.clientWidth/document.body.clientHeight var rightclip,leftclip,topclip,bottomclip var temp=document.all.i1.style topclip=leftclip=0 rightclip=temp.width=document.body.clientWidth bottomclip=temp.height=document.body.clientHeight } function doit(){ window.scrollTo(0,0) if (document.layers){ if (temp.left>window.innerWidth/2) clearInterval(stopit) temp.left+=reference*speed temp.top+=speed temp.right-=reference*speed temp.bottom-=speed } else if (document.all){ if (leftclip>document.body.clientWidth/2) clearInterval(stopit) temp.clip="rect( "+topclip+" "+rightclip+" "+bottomclip+" "+leftclip+")" leftclip+=reference*speed topclip+=speed rightclip-=reference*speed bottomclip-=speed } } stopit=setInterval("doit()",100) --> </script> <!--四方開啟視窗_結束-->
