// Patterns
var formValidationMasks = new Array();
formValidationMasks['email'] = /\b[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b/gi;	// Email
formValidationMasks['numeric'] = /^[0-9]+$/gi;	// Numeric
formValidationMasks['zip'] = /^[0-9]{5}\-[0-9]{4}$/gi;	// Numeric

var formElementArray = new Array();

/* These two event functions are from http://ejohn.org/apps/jselect/event.html */

function addEvent( obj, type, fn ) {
  if ( obj.attachEvent ) {
    obj['e'+type+fn] = fn;
    obj[type+fn] = function(){obj['e'+type+fn]( window.event );}
    obj.attachEvent( 'on'+type, obj[type+fn] );
  } else
    obj.addEventListener( type, fn, false );
}
function removeEvent( obj, type, fn ) {
  if ( obj.detachEvent ) {
    obj.detachEvent( 'on'+type, obj[type+fn] );
    obj[type+fn] = null;
  } else
    obj.removeEventListener( type, fn, false );
}


function validateInput(e,inputObj)
{
	if(!inputObj)inputObj = this;
	var inputValidates = true;

	if(formElementArray[inputObj.name]['required'] && inputObj.tagName=='INPUT' && inputObj.value.length==0)inputValidates = false;
	if(formElementArray[inputObj.name]['required'] && inputObj.tagName=='SELECT' && inputObj.selectedIndex==0){
		inputValidates = false;
	}
	if(formElementArray[inputObj.name]['mask'] && !inputObj.value.match(formValidationMasks[formElementArray[inputObj.name]['mask']]))inputValidates = false;

	if(formElementArray[inputObj.name]['freemask']){
		var tmpMask = formElementArray[inputObj.name]['freemask'];
		tmpMask = tmpMask.replace(/-/g,'\\-');
		tmpMask = tmpMask.replace(/S/g,'[A-Z]');
		tmpMask = tmpMask.replace(/N/g,'[0-9]');
		tmpMask = eval("/^" + tmpMask + "$/gi");
		if(!inputObj.value.match(tmpMask))inputValidates = false
	}

	if(formElementArray[inputObj.name]['regexpPattern']){
		var tmpMask = eval(formElementArray[inputObj.name]['regexpPattern']);
		if(!inputObj.value.match(tmpMask))inputValidates = false
	}
	if(!formElementArray[inputObj.name]['required'] && inputObj.value.length==0 && inputObj.tagName=='INPUT')inputValidates = true;


	if(inputValidates){
		inputObj.parentNode.className='validInput';
	}else{
		inputObj.parentNode.className='invalidInput'
	}
}

function isFormValid()
{
	var divs = document.getElementsByTagName('DIV');
	for(var no=0;no<divs.length;no++){
		if(divs[no].className=='invalidInput')return false;
	}
	return true;
}




function initFormValidation()
{
	var inputFields = document.getElementsByTagName('INPUT');
	var selectBoxes = document.getElementsByTagName('SELECT');

	var inputs = new Array();

	for(var no=0;no<inputFields.length;no++){
		inputs[inputs.length] = inputFields[no];
	}
	for(var no=0;no<selectBoxes.length;no++){
		inputs[inputs.length] = selectBoxes[no];

	}

	for(var no=0;no<inputs.length;no++){

		if(inputs[no].type != 'radio' && inputs[no].type != 'checkbox' && inputs[no].type != 'submit' && inputs[no].type != 'file') {

			var className = inputs[no].parentNode.className;
			if(className && className.indexOf('validInput')>=0)continue;
			var required = inputs[no].getAttribute('required');
			if(!required)required = inputs[no].required;

			var mask = inputs[no].getAttribute('mask');
			if(!mask)mask = inputs[no].mask;

			var freemask = inputs[no].getAttribute('freemask');
			if(!freemask)freemask = inputs[no].freemask;

			var regexpPattern = inputs[no].getAttribute('regexpPattern');
			if(!regexpPattern)regexpPattern = inputs[no].regexpPattern;

			var div = document.createElement('DIV');
			div.className = 'invalidInput';
			inputs[no].parentNode.insertBefore(div,inputs[no]);
			div.appendChild(inputs[no]);
			div.style.width = inputs[no].offsetWidth + 'px';

			addEvent(inputs[no],'blur',validateInput);
			addEvent(inputs[no],'change',validateInput);
			addEvent(inputs[no],'paste',validateInput);
			addEvent(inputs[no],'keyup',validateInput);


			formElementArray[inputs[no].name] = new Array();
			formElementArray[inputs[no].name]['mask'] = mask;
			formElementArray[inputs[no].name]['freemask'] = freemask;
			formElementArray[inputs[no].name]['required'] = required;
			formElementArray[inputs[no].name]['regexpPattern'] = regexpPattern;

			validateInput(false,inputs[no]);
		}
	}
}

window.onload = initFormValidation;