function abrir(URL) {

  var width = 600;
  var height = 230;

  var left = 99;
  var top = 99;

  window.open(URL,'janela', 'width='+width+', height='+height+', top='+top+', left='+left+', scrollbars=yes, status=no, toolbar=no, location=no, directories=no, menubar=no, resizable=no, fullscreen=no');

}

function OpenWindow(url,height,width)
{
   config=""
   config+="toolbar=no,";
   config+="resizable=no," 
   config+="scrollbars=yes,"
   config+="width="+width+","
   config+="height="+height
   var window=open(url,"",config);
   window.focus();
}



<!--
function NovaJanela(pagina,nome,w,h,scroll)
{
LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
settings = 'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',resizable'
win = window.open(pagina,nome,settings);
}
//-->