/**
 * @author aaronc
 */
	function callTab(elm){
		var objparent = document.getElementById('question_nav');
		var objects = objparent.getElementsByTagName("li");
		for(var i=0;i<objects.length;i++){
			var temp_id = objects[i].getAttribute('id');
			var temp_title = temp_id+"_content";
			var temp_content = document.getElementById(temp_title);
			if (temp_id != "inactive") {
				var temp_obj = document.getElementById(temp_id);
				temp_obj.className = "question_tab";
				temp_content.style.display = "none";
				
			}
		}
			
		var obj = document.getElementById(elm);
		var content = document.getElementById(elm+"_content");
		obj.className = "question_tab_selected";
		content.style.display="block";
		
	}