function popup(mylink, windowname)

{

if (! window.focus)return true;

var href;

if (typeof(mylink) == 'string')

href=mylink;

else

href=mylink.href;



// Set our PopUp size:

var Width=740  

var Height=520



var MyWin=window.open(href, windowname, 'width='+Width+',height='+Height+',scrollbars=yes');



var X=(screen.width-Width)/2

var Y=(screen.height-Height)/2



if (MyWin){

   MyWin.moveTo(X,Y)

   MyWin.focus()

}



return false;

}