function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}
addLoadEvent(closeall);
function showHide(divId) { // uses the dom to hide or unhide the auto numbered divs in the menu
	var Div = document.getElementById(divId); (Div.style.display == '') ? Div.style.display = 'none': Div.style.display = ''; 
}
function closeall(){ // close all the divs with classname "pop"
var id=document.getElementsByTagName('div'); var x=0; for (x=0; x<id.length; x++) { if (id[x].className == "pop") id[x].style.display = 'none' ; }
}
function closeallpage(){
var id=document.getElementsByTagName('div'); var x=0; for (x=0; x<id.length; x++) { if (id[x].className == "poppage") id[x].style.display = 'none' ;}
}
function showHidepage(divId) { // uses the dom to hide or unhide the auto numbered divs on the page
var Div = document.getElementById(divId); if( Div.style.display == '') { closeallpage(); } else { closeallpage(); Div.style.display = '';}
}