If you want to open a separate tab or window of same size use target="_blank". It´s attribute of the html tag <a>. and if you want to customize the window you can do it by javascript:
window.open("url","name","width=400,height=350");
Let´s see the simple example:
New Window.html:
----------------------------
<a href="http://www.anyfourm.in" target="_blank">Open new tab</a><br/>
<a href="#" onclick="opennew()">Open new window Or popup</a>
<script type="text/javascript">
function opennew(){
popupWindow=window.open("http://www.anyforum.in","name","width=400,height=350");
popupWindow.focus();
}
</script>
**************************************** Output ****************************************
Open new tab
Open new window Or popup
