function getBodyHeight()
{
	return document.getElementsByTagName('body')[0].offsetHeight;
	return document.body.scrollHeight;
}

function getBodyWidth()
{
	return document.getElementsByTagName('body')[0].offsetWidth;
	return document.body.scrollWidth;
}

function setResize(Lw, Rw)
{
	Lw += 10;
	Rw += 10;
	var Pw = 992;
	var left_space = 0;
	var right_space = 0;
	var Bw = getBodyWidth();
	var lat_Space = (Bw - Pw)/2;
	left_space = lat_Space > Lw ? 0 : lat_Space - Lw;
	right_space = lat_Space > Rw ? 0 : lat_Space - Rw;
	document.getElementById('leftBg').style.left = left_space+'px';
	document.getElementById('rightBg').style.right	= right_space+'px';
}