function MM_openBrWindow(theURL,winName,features) { //v2.0 
    window.open(theURL,winName,features);}

function DM(tag) {

 if ( document.getElementById ) {
    if ( document.getElementById(tag).style.visibility == "hidden" )
        document.getElementById(tag).style.visibility = "visible";
          else document.getElementById(tag).style.visibility = "hidden";
  }

 if ( document.layers ) {
   if ( document.layers[tag].visibility == "hide" )
    document.layers[tag].visibility = "show";
       else document.layers[tag].visibility= "hide";
  }
}