<script type="text/javascript" language="javascript">

        var color = true

        var int = setInterval('blink()', 500)

        function blink() {
            if (color == true) {
                document.getElementById('<%=hdnBGColor1.ClientID%>').style.color = "pink";
                color = false
            }
            else {
                document.getElementById('<%=hdnBGColor1.ClientID%>').style.color = "blue";
                color = true
            }
        }

            
    </script>

In Timer Tick event i have passed labal id like

hdnBGColor1.value="lblawards";

second timer tick

hdnBGColor1.value="Birthday";

But Above java script is not working properly is not get labal id or labal

if i hase directly labal name than it works fine like

document.getElementById('lblawards').style.color = "pink";

Please Give me solution how i can have value of labal or suggess me another code or javascript