function SetCenter(){
	var id='CENTERING';
	var win=self;
	var size=550;

	if(document.getElementById){//M,S,E5
		if(document.all){
			var h = win.document.documentElement.clientHeight;
		}else{
			var h = win.innerHeight;
		}
		var n=(h-size)/2;
		n=(n<0)?0:n;
		document.getElementById(id).style.top=n+(navigator.userAgent.indexOf("Gecko")>0?'px':'');
		document.getElementById(id).style.marginTop='0px';
		window.onresize = SetCenter;
	}else if(document.all){//E4???
		var n=(win.document.body.clientHeight-size)/2;
		n=(n<0)?0:n;
		document.all(id).style.pixelTop=n+"px";
		document.all(id).style.marginTop='0px';
    }else if(document.layers){//N4???
		var n=(win.innerHeight-size)/2;
		n=(n<0)?0:n;
		document.layers[id].moveTo(0,n);
		window.onresize = function(){ location.reload() }
	}
}