function Formatla(obj)
{   
	var Code = new Number(event.charCode | event.keyCode)
    if(obj.value.length>3)
    {
 		var d=new String()
    	obj.value=obj.value.replace('-','')
    	obj.value = obj.value.substring(0,3) + "-" + obj.value.substring(3,10)
       // obj.value += "-"
    }
}