var rowHover = {

	// addEvent cross-browser event handling for IE5+ NS6/Mozilla by Scott Andrew
	addEvent: function(obj, evType, fn, useCapture) {
		// FF
		if (obj.addEventListener) {
			obj.addEventListener(evType, fn, useCapture);
			return true;
		// IE 
		} else if (obj.attachEvent) {
			var r = obj.attachEvent("on" + evType, fn);
			return r;
		} else {
			obj['on' + evType] = fn;
		}
	},
	
	init: function() {
			
		// check for getElementsByTagName support
		if (!document.getElementsByTagName)
			return;
		
		rowHover.trs = document.getElementsByTagName('td');
		for (var i in rowHover.trs) {
			var thisTr = rowHover.trs[i];
			// install event handlers onto divs
			if (thisTr.className && (' ' + thisTr.className + ' ').indexOf(' rowHover ') != -1) {
				rowHover.addEvent(thisTr, 'mouseover', rowHover.trOver, false);
				rowHover.addEvent(thisTr, 'mouseout', rowHover.trOut, false);
				rowHover.addEvent(thisTr, 'click', rowHover.trClick, false);
			}
		}
			
	},
	
	trOver: function (ev) {
		var e = window.event ? window.event : ev;
		var t = e.target ? e.target : e.srcElement;
		var map
		while (t.nodeName.toLowerCase() != 'td') {
			t = t.parentNode;
		}
		
		t.style.background="#eeeeee";
		t.style.cursor = 'pointer';
		
		var c=document.getElementById("map_comment_1");
			var d=document.getElementById("map_comment_2");
			var f=document.getElementById("map_comment_3");
			
		if(t.id=="map1")
		{
			
			
			c.style.display="block";
			d.style.display="none";
			f.style.display="none";
		}
		else if(t.id=="map2")
		{
			c.style.display="none";
			d.style.display="block";
			f.style.display="none";
		}
		else
		{
			c.style.display="none";
			d.style.display="none";
			f.style.display="block";
		}
		
		return true;
	},
	
	trOut: function (ev) {

		var e = window.event ? window.event : ev;
		var t = e.target ? e.target : e.srcElement;
		while (t.nodeName.toLowerCase() != 'td') {
			t = t.parentNode;
		}
		
		t.style.background="";
			
				
		return true;
	},
	
trClick: function (ev) {
		var e = window.event ? window.event : ev;
		var t = e.target ? e.target : e.srcElement;


		while (t.nodeName.toLowerCase() != 'td') {
			t = t.parentNode;
		}
		/*
		if (t.getAttribute('href'))
			location.href = t.getAttribute('href')
		else
			alert('Go to another page');
		*/
		t.style.cursor = 'pointer';
		t.style.background="";
	    prev=t;
		
		clicked=true;
		
		return true;
	},
	
	
	trs: []
}

rowHover.addEvent(window, 'load', rowHover.init, false);// JavaScript Document