function findObj(n, d) { 

  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {

    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}

  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];

  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;

}

function Layer() { //v3.0

  var i,p,v,obj,args=Layer.arguments;

  for (i=0; i<(args.length-2); i+=3) if ((obj=findObj(args[i]))!=null) { v=args[i+2];

    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }

    obj.visibility=v; }

}

function openpopup(url, nev, w, h)
{
   var leftpos
   var toppos
   w = w + 20;
   h = h + 20;
   leftpos = (screen.availWidth / 2) - (w / 2);
   toppos = (screen.availHeight / 2) - (h / 2);
   popupwindow=window.open(url,nev,'height='+h+',width='+w+',left='+leftpos+',scrollbars=yes,top='+toppos);
   popupwindow.focus();
}