Page = {};

Page.resize = function()
{
	var header = document.getElementById('header');
	var footer = document.getElementById('footer');
	var content = document.getElementById('content');
	var left = document.getElementById('left');
	var right = document.getElementById('right');
	
	var contentHeight = document.body.offsetHeight - (header.offsetHeight + footer.offsetHeight) +"px";
	content.style.height = contentHeight;
	left.style.height = contentHeight;
	right.style.height = contentHeight;
}

onload = onresize = Page.resize;