oldtab = 1;
oldcat = '7day';

function openMap(num) {

	document.getElementById('wmap').src = "http://www.nbc40.net/images/weather_maps/"+oldcat+num+".jpg";

}

function tabOpen(tabnum,cat) {

	document.getElementById('tab'+oldtab).className = "tabOFF";
	document.getElementById('tab'+oldtab+'text').className = "tabOFFtext";
	document.getElementById('tab'+tabnum).className = "tabON";
	document.getElementById('tab'+tabnum+'text').className = "tabONtext";
	oldtab = tabnum;

	if(oldcat == "7day") { 
	} else {
		document.getElementById(oldcat).style.display = "none";
	}
	oldcat = cat;

	if(cat == "7day") { 
	} else {
		document.getElementById(cat).style.display = "block";
	}

	if(cat == "7day") { 
	document.getElementById('wmap').src = "http://www.nbc40.net/images/weather_maps/7day.jpg";
	} else {
	document.getElementById('wmap').src = "http://www.nbc40.net/images/weather_maps/"+cat+"1.jpg";
	}

}