function setMiddle() {
	var wide = (document.documentElement.clientWidth);
	if(wide > 968){
		document.getElementById("leftbg").style.width =((wide/2)-484)+"px";
		//document.getElementById("container").style.width =(((wide/2)-484)+968)+"px";
	}
	else if(document.body.clientWidth <= 968){
		document.getElementById("leftbg").style.width = "0px";
	}
	if( document.documentElement.clientHeight >= 560 ) {
		var h = (document.documentElement.clientHeight/2)-315;
		document.getElementById("containerwrapper").style.top = h+"px";
	} else {
		document.getElementById("containerwrapper").style.top = "0px";
	}
}
window.onresize = setMiddle;