/*
DYNAMIC PAGE HEIGHTS
*/

// get the objects
// left_menu is all 3 columns of the page -- everything between the masthead and footer
var objLeftMenu = document.getElementById("left_menu");
var objMain = document.getElementById("main");
var objFooter = document.getElementById("footer");
var objContentText = document.getElementById("content_txt");

// get the height of the main section
// var headerHeight = objHeader.offsetHeight;
var mainHeight = objMain.offsetHeight;
var leftMenuHeight = objLeftMenu.offsetHeight;
var footerHeight = objFooter.offsetHeight;
// alert("leftMenuHeight: " + leftMenuHeight + "   mainHeight: " + mainHeight);

objFooter.style.height = leftMenuHeight - mainHeight + "px";

// the taller of the main area or the text area
// will determine if the footer grows
if (leftMenuHeight <= mainHeight) {
 	var heightDiff = mainHeight - leftMenuHeight;
	// alert("heightDiff: " + heightDiff);
	// increase the footer height by that amount
	// alert("footerHeight: " + footerHeight);
	
	// add the difference
	var tallerFooterHeight = footerHeight + heightDiff;
	// alert("tallerFooterHeight: " + tallerFooterHeight);
	objFooter.style.height = tallerFooterHeight + "px";
	}