/**
 * DHTML email validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */

function echeck(str){
	var atSymb="@";
	var dot=".";
	var lat=str.indexOf(atSymb);
	var lstr=str.length;
	var ldot=str.indexOf(dot);
	if (str.indexOf(atSymb)==-1){
		return false;
	}

	if (str.indexOf(atSymb)==-1 || str.indexOf(atSymb)==0 || str.indexOf(atSymb)==lstr){
		return false;
	}

	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		return false;
	}

	if (str.indexOf(atSymb,(lat+1))!=-1){
		return false;
	}

	if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		return false;
	}

	if (str.indexOf(dot,(lat+2))==-1){
		return false;
	}

	if (str.indexOf(" ")!=-1){
		return false;
	}

	return true;					
}

function ValidateForm(){
	var toEmail = document.tellAFriend.toEmail;
	var fromEmail = document.tellAFriend.fromEmail;

	if ((fromEmail.value==null)||(fromEmail.value=="")){
		alert("Please Enter your Email Address");
		fromEmail.focus();
		return false;

	} else if ((toEmail.value==null)||(toEmail.value=="")){
		alert("Please Enter a Friend's Email Address");
		toEmail.focus();
		return false;
	}

	if (echeck(fromEmail.value)==false){
		alert("Please Enter a Valid From Email Address");
		fromEmail.focus();
		return false;

	} else if (echeck(toEmail.value)==false){
		alert("Please Enter a Valid To Email Address");
		toEmail.focus();
		return false;
	}

	
	
	return true;
}

function submitform(){
	if(document.tellAFriend.onsubmit()){
		// add hidden field 'listingId' to form, value = selected item id
		document.tellAFriend.listingId.value = selectedListingId;
		document.tellAFriend.submit();
	}
}