var radio_selection1="";

function checkEnqForm(returns) {
	var why = "";
		
		why += isEmpty(returns.userid.value, "User ID");
		if (why != "") {
			alert(why);
			returns.userid.focus();
			return false;
		}
		
		why += checkEmail(returns.email.value, "Preferred Email Address");
		if (why != "") {
		alert(why);
		returns.email.focus();
		return false;
		}
		
		why += isEmpty(returns.phone.value, "Contact Phone Number");
		if (why != "") {
			alert(why);
			returns.phone.focus();
			return false;
		}
		
		why += isEmpty(returns.order_no.value, "Order Number");
		if (why != "") {
			alert(why);
			returns.order_no.focus();
			return false;
		}
		
		why += isEmpty(returns.items_returned.value, "Item/s Returned");
		if (why != "") {
			alert(why);
			returns.items_returned.focus();
			return false;
		}
		
		why += checkDropdown(returns.reason.selectedIndex, "Reason for Return");
		if (why != "") {
			alert(why);
			returns.reason.focus();
			return false;
		}	
		
		why += checkDropdown(returns.type.selectedIndex, "Refund / Exchange");
		if (why != "") {
			alert(why);
			returns.type.focus();
			return false;
		}	
		
	return true;
	}



function checkEmail (strng) {
var error="";
if (strng == "") {
   error = "You didn't enter an email address.\n";
}

    var emailFilter=/^.+@.+\..{2,3}$/;
    if (!(emailFilter.test(strng))) { 
       error = "Please enter a valid email address.\n";
    }
    else {
//test email for illegal characters
       var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/
         if (strng.match(illegalChars)) {
          error = "The email address contains illegal characters.\n";
       }
    }
return error;    
}

// non-empty textbox

function isEmpty(strng, fldName) {
var error = "";
  if (strng.length == 0) {
     error = "The " + fldName + " field has not been filled in.\n"
  }
return error;	  
}

// phone number - strip out delimiters and check for 10 digits

function checkPhone (strng) {
var error = "";
if (strng == "") {
   error = "You didn't enter a phone number.\n";
}

var stripped = strng.replace(/[\(\)\.\-\ ]/g, ''); //strip out acceptable non-numeric characters
    if (isNaN(parseInt(stripped))) {
       error = "The phone number contains illegal characters.";
  
    }
    if (!(stripped.length == 10)) {
	error = "The phone number is the wrong length. Make sure you included an area code.\n";
    } 
return error;
}

// valid selector from dropdown list

function checkDropdown(choice, fldName) {
var error = "";
    if (choice == 0) {
    error = "You didn't choose an option from the " + fldName + " drop-down list.\n";
    }    
return error;
}

// exactly one radio button is chosen
function verifyq1 (){
if (radio_selection1==""){
alert("\nPlease select the appropriate 'Reason for Return'.");
return false;}
else
{
return true;
}
}