<asp:imagebutton id="ImageButton1" runat="server" onmouseover="call(this)" value="<%#Eval("UNAME") %>" commandargument="<%#Eval("UNAME") %>" xmlns:asp="#unknown" />
function call(i) {
alert(i.value);
var a=i.value;
}
NOw just i have to Call __doPostBack('call','a'); //is it Right????
private void call(string id)
{}