// JavaScript Document
function windowHeight(){
 	var de = document.documentElement;
	return self.innerHeight || (de && de.clientHeight) || document.body.clientHeight;
 }
  function setFooter(footerDiv) {
 	var screenHeight = windowHeight();
	var divFooter = document.getElementById(footerDiv);
	if (divFooter.scrollHeight < (screenHeight)) {
			divFooter.style.height = screenHeight + 'px';
		}	
}