function noStrings(e) {
		var keynum;
		var keychar;
		var numcheck;

		if(window.event) { // IE
			keynum = e.keyCode;
		}
		else if(e.which) {// Netscape/Firefox/Opera
			keynum = e.which;
		}
		keychar = String.fromCharCode(keynum);
		numcheck = /\d/;
		return numcheck.test(keychar);
	}