$(document).ready(function(){
	/**
	 * Re-assigns a couple of the ASP.NET validation JS functions to
	 * provide a more flexible approach
	 */
	function UpgradeASPNETValidation(){
		// Hi-jack the ASP.NET error display only if required
		if (typeof(Page_ClientValidate) != "undefined") {
			ValidatorUpdateDisplay = NicerValidatorUpdateDisplay;
	   }
	}

	/**
	 * Extends the classic ASP.NET validation to add a class to the parent span when invalid
	 */
	function NicerValidatorUpdateDisplay(val){
		for (i=0; i< Page_Validators.length; i++)
		{
			if (Page_Validators[i] == val && !val.isvalid)
				$("#" + Page_Validators[i].controltovalidate).addClass('error');
			else if (Page_Validators[i] == val && val.isvalid){
			/*Check all previous validators to see if they set the error class*/
				previouslyValid = true;
				for (j=0; j<i; j++){
					if (Page_Validators[j].controltovalidate == Page_Validators[i].controltovalidate && !Page_Validators[j].isvalid)
					{
						previouslyValid = false;
						break;
					}
				}
				if (previouslyValid)
					$("#" + Page_Validators[i].controltovalidate).removeClass('error');
			}
		}
		if (typeof(val.display) == "string") {    
			if (val.display == "None")
				return;
			if (val.display == "Dynamic") {
				val.style.display = val.isvalid ? "none" : "inline";
				return;
			}
		}
		val.style.visibility = val.isvalid ? "hidden" : "visible";
	}
	
	UpgradeASPNETValidation();
});