var str='<style>'+
'<!--'+
'.intro{'+
'position:absolute;'+
'left:0;'+
'top:0;'+
'layer-background-color:red;'+
'background-color:#DDDDDD;'+
'border:0.1px solid red'+
'}'+
'-->'+
'</style>'+
'<div id="i1" class="intro"></div><div id="i2" class="intro"></div>';
document.write(str);

var speed=20
var temp=new Array()
var temp2=new Array()
if (document.layers){
for (i=1;i<=2;i++){
temp[i]=eval("document.i"+i+".clip")
temp2[i]=eval("document.i"+i)
temp[i].width=window.innerWidth/2
temp[i].height=window.innerHeight
temp2[i].left=(i-1)*temp[i].width
}
}
else if (document.all){
var clipright=document.body.clientWidth/2,clipleft=0
for (i=1;i<=2;i++){
temp[i]=eval("document.all.i"+i+".style")
temp[i].width=document.body.clientWidth/2
temp[i].height=document.body.offsetHeight
temp[i].left=(i-1)*parseInt(temp[i].width)
}
}


function openit(){
window.scrollTo(0,0)
if (document.layers){
temp[1].right-=speed
temp[2].left+=speed
if (temp[2].left>window.innerWidth/2)
clearInterval(stopit)
}
else if (document.all){
clipright-=speed
temp[1].clip="rect(0 "+clipright+" auto 0)"
clipleft+=speed
temp[2].clip="rect(0 auto auto "+clipleft+")"
if (clipright<=0)
clearInterval(stopit)
}
}

function gogo(){
stopit=setInterval("openit()",8)
}
gogo()