in page 1, i have a sentense
<a href="javascript:window.open(url, '')">
every time i click this link, it will pop up a new window.
what i want to see is:
the first time i click it, it pops up a new window. for the second time, it doesn't pup up another new window. instead, it uses the existing window for following pop up, unless the first popup window is closed.
any idea?