function pcenter_s_yes(theURL, name,  width, height ){
  var x = (screen.width) ? (screen.width-width)/2 : 0;
  var y = (screen.height) ? (screen.height-height)/2 : 0;  
  var pop = window.open(theURL,name,"toolbar=no,location=no,status=no,menubar=no,scrollbars=yes,resizable=no,width="+width+",height="+height+",left="+x+",top="+y);
  pop.focus
}

function pcenter_s_no(theURL, name,  width, height ){
  var x = (screen.width) ? (screen.width-width)/2 : 0;
  var y = (screen.height) ? (screen.height-height)/2 : 0;  
  var pop = window.open(theURL,name,"toolbar=no,location=no,status=no,menubar=no,scrollbars=no,resizable=no,width="+width+",height="+height+",left="+x+",top="+y);
  pop.focus
}