var phone = "()- 0123456789"; var numb = "0123456789.-+"; var isdate = numb +"-"; var alpha = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ "; var alphanum = alpha + numb;
function allowChars(txt,allow) {var w = "";	var len = txt.value.length;	for (i=0; i < len; i++) { x = txt.value.charAt(i); if (allow.indexOf(x,0) != -1) w += x;} t.value = w;}
function isNumeric(x) {var RegExp = /^[-+]?[0-9]*\.?[0-9]+(?:[eE][-+]?[0-9]+)?$/;var result = x.match(RegExp);return (result == null) ? false : result;}
function getValue(elementId){ return document.getElementById(elementId).value; }
function getNumber(elementId){var val = getValue(elementId);if (!isNumeric(val)) {val = 0; }return (val == '') ? 0 : eval(val);}
function setValue(elementId, val){ document.getElementById(elementId).value = val;}