function getElementHeight(element) {
	if(document.getElementById) {
		var elem_var = document.getElementById(element);
	} else if (document.all){
		var elem_var = document.all[element];
	}
	xPos = elem_var.offsetHeight;
	//alert(xPos);
	return xPos;
} 


	 	
function changeClassHeight(parent, tag, className, newHeight) {
   var linkList = document.getElementById(parent).getElementsByTagName(tag);
   for (i = 0; i < linkList.length; i++) {
      if (linkList[i].className == className){
      	//alert("New Height: " + newHeight);
      	//alert(linkList[i].offsetHeight);
      	if (linkList[i].offsetHeight < newHeight) {
	      	linkList[i].style.height = newHeight + 'px';
	      }
      }
   }
}



function heightChange() {
	
	 frameHeight = getElementHeight('main_content');
	 changeClassHeight('content_area', 'div', 'column', frameHeight);
	
}