function resizer(){
	obj=document.getElementById("contents");
	objOffset=obj.offsetLeft;
	if(obj.offsetLeft<0){
		obj.style.left="0px";
		obj.style.marginLeft="0px";
	}else{
		obj.style.left="50%";
		obj.style.marginLeft="-492px";
	}
	objOffset=obj.offsetTop;
	if(obj.offsetTop<0){
		obj.style.top="0px";
		obj.style.marginTop="0px";
	}else{
		obj.style.top="50%";
		obj.style.marginTop="-302px";
	}
}
if(window.addEventListener) {
	window.addEventListener("load", resizer, false);
	window.addEventListener("resize", resizer, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", resizer);
	window.attachEvent("onresize", resizer);
}