pop up window opening behind main

[Oreo1982]

I have an input form that requests a date from the user and have a pop-up window with a calendar in it. Problem is the window shows for less than a second and then goes behind the main page. I have used this exact code in several other places with no problem. The only difference that I know of/ can see is the name of the textbox that it fills when a date is selected. Here is the piece of code from the .aspx file.

<asp:TextBox ID="txtDate" runat="server" ForeColor="#3366CC" BackColor="#E1ECFC" TabIndex="1"></asp:TextBox>&nbsp;
                <a onclick="window.open('popup.aspx?textbox=txtDate','cal','width=250,height=225,left=270,top=180')"
					href="javascript:;"><asp:ImageButton ID="imgDate" AlternateText="cal" ImageUrl="Images/SmallCalendar.gif" runat="server" TabIndex="20" /></a>

Once i bring up the window via the task bar, it works as expected. As far as i can tell, there are no javascript or asp errors.

any help would be appreciated. This is the only thing preventing this project from going live.

Thank you in advance.

Greg

[Fungus1487]

onclick="window.open('popup.aspx?textbox=txtDate','cal','width=250,height=225,left=270,top=180')"
href="javascript:;"

Try

onclick="window.open('popup.aspx?textbox=txtDate','cal','width=250,height=225,left=270,top=180');return false;"
href="javascript:void(0);"

And if that fails you could always try

onclick="var w = window.open('popup.aspx?textbox=txtDate','cal','width=250,height=225,left=270,top=180');w.focus();return false;"
href="javascript:void(0);"

[Oreo1982]

Try

onclick="window.open('popup.aspx?textbox=txtDate','cal','width=250,height=225,left=270,top=180');return false;"
href="javascript:void(0);"

Thanks... that worked great!!!