function popup(URL,w,h,x,y) {
              var popupWindow = window.open(
            'URL','Name','width='+w+',height='+h+',left='+x+',top='+y+',screenX='+x+',screenY='+y);
}

getURL("javascript:popup('takemail.php',500,500,0,0)");


changed to :
      function popup(URL,w,h,x,y) {
              var popupWindow = window.open(URL,'width='+w+',height='+h+',left='+x+',top='+y+',screenX='+x+',screenY='+y);
//        popupWindow.document.write(site);
      }