var n = (document.layers) ? 1:0;
var ie = (document.all) ? 1:0;

ie=false;
n=false;

var imgDir = "images/menus/";
var menuOpen = null;

var closingMenu = null;

function showMenu(menuId)
{
 
  clearTimeout(closingMenu);
 
 if(menuOpen != null) closeMenus(); 	// check if existing menus should be closed
 
 if(n)
 {
   document.layers[menuId].visibility = "show";
 }
 else if(ie)
 {
   document.all[menuId].style.visibility = "visible";
 }
 
 closingMenu = setTimeout("closeMenus()" , 2000);
 menuOpen = menuId;

}



function closeMenus(){

  clearTimeout(closingMenu);

 if(menuOpen != null)
 {
   if(n)
   {
      	document.layers[menuOpen].visibility="hide";
   }
   else if(ie)
   {
	document.all[menuOpen].style.visibility="hidden";
   }
 }

  menuOpen = null;

}


function rollOver(imgName){

 clearTimeout(closingMenu);
  
  if(ie){
   document.images[imgName].src =  imgDir + imgName + "ROLL.gif";
  }

}

function rollOut(imgName){

 closingMenu = setTimeout("closeMenus()" , 1000);
 
  if(ie){
   document.images[imgName].src = imgDir + imgName + ".gif";
  }
}



function openWindow(theUrl)
{

window.open(theUrl , "accom" , "height=500,width=650,toolbar=no,menubar=no,resizable=no,copyhistory=no,location=no,scrollbars=yes");

}

function openMovWindow(theUrl)
{

window.open(theUrl , "accom" , "height=350,width=350,toolbar=no,menubar=no,resizable=no,copyhistory=no,location=no,scrollbars=yes");

}