function popup(url)

{
win = window.open("","windows","width=650,height=520,scrollbars=yes,resizable=yes,left=0,top=0");
  
  {
     if(win.opener==null) 
     win.opener=self;   
     win.location.href=url;
  }

win.focus();

}
function calendar(url)

{
win2 = window.open("","calendar","width=200,height=170, scrollbars=yes,resizable=yes,left=0,top=0");
  
  {
     if(win2.opener==null) 
     win2.opener=self;   
     win2.location.href=url;
  }

win2.focus();

}