/**
 * Opens a windows of predefined size 
 */
function openWindow( url , name , width , height ) {
 var posWidth=640;
 if (document.all) {
  posWidth=document.body.offsetWidth;
 }
 else if ( document.layers ) {
  posWidth=window.innerWidth;
  alert("window.innerWidth="+posWidth);
 }
 
 var left=(posWidth-width);
 var popWin = window.open (url, name, "resizable=yes,location=no,toolbar=no,menubar=no,directories=no,scrollbars=yes,width="+width+",height="+height+",top=50,left="+left);
 popWin.focus();
}

/**
 * Opens the help window 
 */
function openHelp(ref) {
 openWindow ('/galtec_web/help_view.jsp?ref='+ref,"GaltecHelp",410,500);
}
/* --- */