var topnavId = 0;

function initTopnav() {
	var topnavContainer = document.getElementById("topnav-container");
	var containerArray = topnavContainer.getElementsByTagName("div");
	for(i = 0; i < containerArray.length; i++){
		var tempDiv = containerArray[i];
		if (tempDiv.className.indexOf("dropdown-container") >= 0){
			topnavId++;
			var dropdownArray = tempDiv.getElementsByTagName("div");
			for(j = 0; j < dropdownArray.length; j++){
				var tempDiv1 = dropdownArray[j];
				if (tempDiv1.className.indexOf("header") >= 0){
					var tempA = tempDiv1.getElementsByTagName("a")[0];
					tempA.idValue = topnavId;
					tempA.onmouseover = function() {
						show('nav-container' + this.idValue);
					}
					tempA.onmouseout = function() {
						hide('nav-container' + this.idValue);
					}
				}
			}
			var navList  = tempDiv.getElementsByTagName("ul")[0];
			navList.id = "nav-container" + topnavId;
			navList.onmouseover = function() {
				show(this.id);
			}
			navList.onmouseout = function() {
				hide(this.id);
			}
			var navIframe  = tempDiv.getElementsByTagName("iframe")[0];
			navIframe.id = "nav-container"+topnavId+"-iframe";
		}
	}
}