Hi
You can do one thing. Set Readonly Property and On Open Popup Check txtBox is readonly or not Like this.
This is the sample code
function ToolTip(textid, todayDay, seleteddate) {
document.getElementById(textid).title = "Hii";
if (document.getElementById(textid).readOnly == false) {
window.open("task.aspx");
}
}
<asp:TextBox ID="txtDays" ReadOnly="true" runat="server"></asp:TextBox>
Thanks & Regards ,
Anu Malik
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