function imgON(num)
		{
			document.getElementById("n"+num).src=imgs[num]["on"].src;
		}
		
		function imgOFF(num)
		{
			document.getElementById("n"+num).src=imgs[num]["off"].src;
		}
		
		function homeimgON(num)
		{
			document.getElementById("n"+num).src=homeimgs[num]["on"].src;
		}
		
		function homeimgOFF(num)
		{
			document.getElementById("n"+num).src=homeimgs[num]["off"].src;
		}
		
		function isValidEmailAddr(str)
		{
			var emailregexp = eval("/^[\\w-_~]+(\\.[\\w-_~]+)*@[\\w-_~]+(\\.[\\w-_~]+)+$/");
			var results = str.search(emailregexp);
			return (results == 0);
		}