window.onresize = print_pos;

function content_pos(x, y) {
	var e = document.getElementById("page_start");
	var s = document.documentElement.clientHeight;

	if (y < s){
		e.style.height = s + "px";
	}else{
		//y += 30;
		e.style.height = y + "px";
	}
}

function print_pos() {
	var e=document.getElementById("page_end"), x=0, y=0, log="";
	while (e) {
		x += e.offsetLeft;
		y += e.offsetTop;
		x -= e.scrollLeft;
		y -= e.scrollTop;
		e = e.offsetParent;
	}
	content_pos(x, y);
}