To set value to server control(asp.net, label control) in javascript

[sudhashekhar30]

--------javascript function--------
[CODE=javascript]function setvalue()
{
var empfname=docume nt.getElementBy Id('<%=TxtempFn ame.ClientID >').value;

if(empfname=="" )
{
document.getEle mentById('<%=La belValidMsg.Cli entID %>').value="ple ase insert First Name";

document.getEle mentById('<%=Tx tempFname.Clien tID %>').focus();
}
}
[/CODE]
--------asp.net---------
[CODE=vb]page load()
{ if ( !page.isPostBac k)
{submitBtn.attr ibutes.add("onc lick", setvalue());}
}
[/CODE]i am checking the value in textbox. if it is empty den setting value of label and sending cursor back to textbox. mine coding is not working(not setting value in label). how i can do it?

[acoder]

What is the label? If it's not got a value attribute, you'll need to use innerHTML instead.

Don't forget to use code tags when posting code:

&#91;CODE=javas cript]
JavaScript code...
[/CODE]

[dabei]

Can you try to debug it with Firebug ?