The interesting part is, the the window.open() function. The arguments of this function are mainly three. First one is URL, second is NAME. and in third one we can put many characteristics of the popup window. they will have to be in a single quotation mark and distinguished by comma(,) For example, see the above window.open function window.open(url,’name’,’scrollbars,height=500,width=500′). Here after url, name, all other scrollbars, height, width are taken in the single quotation marks.
More functionality can be added in this THIRD part of the argument of window.open() function:
<a onclick="return popitup('popupex.html')" href="popupex.html">Link to popup</a>