// Navigation Menu Script

var cssmenuids=["navmenu1"] 		//Enter id(s) of CSS Horizontal UL menus, separated by commas
var csssubmenuoffset=0 			//Offset of submenus from main menu. Default is 0 pixels.

function createcssmenu2(){
for (var i=0; i<cssmenuids.length; i++){
  var ultags=document.getElementById(cssmenuids[i]).getElementsByTagName("ul")
    for (var t=0; t<ultags.length; t++){
			ultags[t].style.top=ultags[t].parentNode.offsetHeight+csssubmenuoffset+"px"
    	var spanref=document.createElement("span")
			spanref.className="arrowdiv"
			spanref.innerHTML=""
			ultags[t].parentNode.getElementsByTagName("a")[0].appendChild(spanref)
    	ultags[t].parentNode.onmouseover=function(){
					this.style.zIndex=100
    	this.getElementsByTagName("ul")[0].style.visibility="visible"
					this.getElementsByTagName("ul")[0].style.zIndex=0
    	}
    	ultags[t].parentNode.onmouseout=function(){
					this.style.zIndex=0
					this.getElementsByTagName("ul")[0].style.visibility="hidden"
					this.getElementsByTagName("ul")[0].style.zIndex=100
    	}
    }
  }
}

if (window.addEventListener)
window.addEventListener("load", createcssmenu2, false)
else if (window.attachEvent)
window.attachEvent("onload", createcssmenu2)


// Preload menu alt images
if (document.images){
	preloadImg = new Image();
	image_url = new Array();				
      	image_url[1] = "../../images/menu/about-alt.png";
      	image_url[2] = "../../images/menu/apply-alt.png";
      	image_url[3] = "../../images/menu/academics-alt.png"; 
      	image_url[4] = "../../images/menu/programs-alt.png"; 
      	image_url[5] = "../../images/menu/academics-alt.png"; 
      	image_url[6] = "../../images/menu/universities-alt.png"; 
      	image_url[7] = "../../images/menu/health-alt.png"; 
      	image_url[8] = "../../images/menu/home-alt.png"; 

       var i = 1;
       for(i=1; i<=8; i++) preloadImg.src = image_url[i];
}