function isEmail(str)
	{
		var pass = 0;
		if (window.RegExp)
		{
			var tempStr = "a";
			var tempReg = new RegExp(tempStr);
			if (tempReg.test(tempStr)) pass = 1;
		}
		
		if (!pass)
			return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
			
		var r1 = new RegExp("(@.*@)|(\\.\\.)|(@\\.)|(^\\.)");
		var r2 = new RegExp("^[a-zA-Z0-9\\.\\!\\#\\$\\%\\&\\'\\*\\+\\-\\/\\=\\?\\^\\_\\`\\{\\}\\~]*[a-zA-Z0-9\\!\\#\\$\\%\\&\\'\\*\\+\\-\\/\\=\\?\\^\\_\\`\\{\\}\\~]\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$");
		return (!r1.test(str) && r2.test(str));
	}

	function submitForm(f)
	{
		f.submit();
	}