What if nothing is selected ?

Hi,

Can somebody help with this function:


416 function deleteRow() {
var sel= document.formList.iListBox.selectedIndex;
if(sel!=null) {
document.formList.iListBox.remove(sel);
} else {
alert("Please select an item");
}
}


When I call this function (onClick), I get a Runtime Error:
'Line 416
Error: Invalid argument'



Thanks in advance

Problem solved.

If no item is selected, selectedIndex returns -1.


Greeting