/*
 * nav.js
 *
 * Registers mouseover and mouseout events for navigtion elements
 */
	function initNav ()
	{ 
		if (document.getElementById)
		{
			var node;
			var nodes;
			var subNode;
			var subNodes;
			var navObj = document.getElementById("nav");

			nodes = navObj.childNodes;
			// alert(nodes.length);
			for (i = 0; i < nodes.length; i++)
			{
				node = nodes[i];
				if (node.nodeName == "LI")
				{
					node.onmouseover = function()
					{
						this.className = "over";
					}
					node.onmouseout = function()
					{
						this.className = "";
					}

					subNodes = node.getElementsByTagName("UL");
					subNodes = subNodes[0].childNodes;
					for (j = 0; j < subNodes.length; j++)
					{
						subNode = subNodes[j];
						if (subNode.nodeName == "LI")
						{
							if (subNode.className != "last")
							{
								subNode.onmouseover = function()
								{
									this.className = "sub_over";
								}
								subNode.onmouseout = function()
								{
									this.className = "";
								}
							}
							else
							{
								subNode.onmouseover = function()
								{
									this.className = "last_over";
								}
								subNode.onmouseout = function()
								{
									this.className = "last";
								}
							}
						}
					}
				}
			}
		}
	};