/*****************************************************************************************************

* Easy Javascript Validation by Daniel Boorn

* Copyright 2006, All Rights reserved by Daniel Boorn

* Contact: daniel.boorn@gmail.com - wwww.dboorn.com

* In any form element add the following form attributes to validate

* required ="yes"

* validate = { "int", "float", "text", "email" }

* message = "Error Message for Element"

* Example: <input type="text" validate="int" message="Please enter valid zip code" name="zip">

*

* It is required that you add the following to any submit button

*     onClick="validate(this.form); return document.formSubmit;"

******************************************************************************************************/



	function validate(form){

		

		var error = "";

		//for each form element

		for(var i=0; i<form.length; i++){

			var element = form[i];

			//if required

			if(element.getAttribute("required") == "yes"){

				//if form element if empty

				if(!valid(element.value,element.getAttribute("validate"),element))

					error += element.getAttribute("message") + "\r\n";	

			}

		}

		if(error != ""){

			alert(error);

			document.formSubmit = false;

		}

		else

			document.formSubmit = true;

	}	

	

	function valid(value,type,element){

		if(value == "")

			return false;

			

		switch(type){

			case "int":

				if(isNaN(parseInt(value)))

					return false;

				break;

			case "float":

				if(isNaN(parseFloat(value)))

					return false;

				break;

			case "email":

				var p = value.indexOf('@');

				if(p<1 || p==(value.length-1))

					return false;

				break;

			case "checked":

				if(!element.checked)

					return false;

				break;

			default://string

				break;

		}

		return true;

	}