// JavaScript Document

// this function toggles the status of a list 
function toggle(list){ 
var listElementStyle=document.getElementById(list).style; 
	if (listElementStyle.display=="none"){ 
		listElementStyle.display="block"; 
	} else { 
		listElementStyle.display="none"; 
 	} 
} 

// check box control select all
function checkUncheckAll(theElement) {
     var theForm = theElement.form, z = 0;
     while (theForm[z].type == 'checkbox' && theForm[z].name != 'checkall') {
      theForm[z].checked = theElement.checked;
      z++;
     }
    }