var time = 3000;
var numofitems = 4;

//menu constructor
function menu(allitems,thisitem,startstate){ 
  callname= "gl"+thisitem;
  divname="subglobal"+thisitem;  
  this.numberofmenuitems = 4;
  this.caller = document.getElementById(callname);
  this.thediv = document.getElementById(divname);
}
//menu methods
function ehandler(event,theobj){
  for (var i=1; i<= theobj.numberofmenuitems; i++){
    var shutdiv =eval( "menuitem"+i+".thediv");
    shutdiv.style.visibility="hidden";
  }
  theobj.thediv.style.visibility="visible";
}