This code shows how to get value from the control irrespective of the control type used in the client side Javascript.
function GetValue(ControlName,FormName){var Control=document.forms[FormName].elements[ControlName]alert(Control.type) switch(Control.type) { case "select-one": case "select-multiple": if(Control.selectedIndex!=-1) return Control.options[Control.selectedIndex].value break; default: return Control.value }}