// JavaScript Document
var speed=40
if (document.layers) {
    var reference=window.innerWidth/window.innerHeight
    var temp=eval("document.id1.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.id1.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)