How a 'required field validator' will firedout for empty tex

Hey you can use java scrip like this:

function myfunction()
{

        var txt_Value = document.getElementById("<%=txt_name.ClientID%>").value;
        var pass = document.getElementById("<%=txt_pass.ClientID%>").value;
        if (txt_Value == "")
         {

             alert("Enter Your Login Name");
             document.getElementById("txt_name").focus();
             return false;
            
        }
        else if (pass == "") {
        alert("Enter Password first");
       
        }
    }

and call on button click like this...


i think its work for u....