// JavaScript Document
function windowHeight(){
 	var de = document.documentElement;
	return self.innerHeight || (de && de.clientHeight) || document.body.clientHeight;
 }
  function setFooter(offset) {
 	var screenHeight = windowHeight();
	var divFooter = document.getElementById('background');
	var divMain = document.getElementById('mainContentContainer');
	var divMainHome = document.getElementById('mainContentContainerHome');
	if (divMain == null){
		if (divFooter.scrollHeight < (screenHeight)) {
			divFooter.style.height = screenHeight + 'px';
			divMainHome.style.height = (screenHeight - offset) + 'px';
		}	
	}
	else {
		if (divFooter.scrollHeight < (screenHeight)) {
			divFooter.style.height = screenHeight + 'px';
			divMain.style.height = (screenHeight - offset) + 'px';
		}	
	}
}