function zipsearchcheck()
		{
		
			var field = document.frmzipcode.txt_leftmenu_zipcodesearch.value;
			if(field=='')
			{
				alert("Please enter a zipcode to search.");
				document.frmzipcode.txt_leftmenu_zipcodesearch.focus();
				return false;
			}
			
			var valid = "0123456789-";
			var hyphencount = 0;
			
			if (field.length > 6) {
				alert("Please enter your 5 digit or 6 digit zip code.");
				return false;
			}
			for (var i=0; i < field.length; i++) {
				temp = "" + field.substring(i, i+1);
				if (temp == "-") hyphencount++;
				if (valid.indexOf(temp) == "-1") {
					alert("Invalid characters in your zip code.  Please try again.");
					return false;
				}
			}
			return true;
		}