var bod=document.documentElement;
var divwidth =0;
if(bod.clientWidth>1012){
divwidth=(bod.clientWidth-1012)/2;
}
document.writeln("<style type='text/css'>");
document.writeln("#left{width:"+divwidth+"px}");
if(!divwidth)
document.writeln("#left{border:none}");
document.writeln("#right{width:"+divwidth+"px}");
if(!divwidth)
document.writeln("#right{border:none}");
document.writeln("</style>");
window.onresize=function(){
var csstext='';
divwidth =0;
if(bod.clientWidth>1012){ 
divwidth=(bod.clientWidth-1012)/2;
}
if(!divwidth)
csstext="width:0; border:none;";
else
csstext="width:"+divwidth;
document.getElementById('left').style.cssText=csstext;
document.getElementById('right').style.cssText=csstext; 
}