//this function will get the current/computed style in IE and Moz/FF
function getStyle(obj,Attribute) {
	if (obj) {
		if (obj.currentStyle)
			var value = eval('obj.currentStyle.'+Attribute)
		else
			var value = eval('document.defaultView.getComputedStyle(obj, null).'+Attribute)
		return parseInt(value);
	}
}

function setHeights() {
	var nav		= document.getElementById('div_nav_col_vp');
	var content			= document.getElementById('div_content_col1_vp');
	var nav_height			= nav.offsetHeight;

	if (nav)
		content.style.top = nav_height+40;
}