PreView = null;

function errorTrap() {return true;}
window.onerror = errorTrap;

function popupbild(bildsrc,b,h,breite,hoehe,titel,inhalt)
{
   zu();
   sichtbar(bildsrc,b,h,breite,hoehe,titel,inhalt);
}

function sichtbar(bildsrc,b,h,breite,hoehe,titel,inhalt)
 {
var scb="scrollbars=no";
var res="resizable=no";

if (screen.width < breite) {
hoehe=screen.height-75;
breite=screen.width-10;
scb="scrollbars=yes";
res="resizable=yes";}
else {
if (screen.height < hoehe+75) {
breite=breite+20;
hoehe=screen.height-90;
scb="scrollbars=yes";
res="resizable=yes";
if (screen.width < breite) {breite=screen.width;}
}}

var look='top=0,left=0,width='+breite+',height='+hoehe+','+scb+','+res+',dependent=yes,status=yes'
var tit='<TITLE>'+titel+'</TITLE>'
jas = '';
jas +='<SC' + 'RIPT LANGUAGE="JavaScript" TYPE="text/javascript">\n';
jas +='function preload() \n';
jas +='{document.title="'+titel+'"\n';
jas +='document.images[0].alt="'+titel+'"}\n';
jas += '</S' + 'CRIPT>\n';
PreView = window.open("", "", look);
PreView.document.writeln("<HTML><HEAD>");
PreView.document.writeln(tit);
PreView.document.title="Bild wird geladen, bitte um Geduld... "; 
PreView.document.writeln("<style>"); 
PreView.document.writeln("form {color : #000000; font-family : Arial, Helvetica, sans-serif; font-size: 12px;}");
PreView.document.writeln("</style>");
PreView.document.writeln(jas);
if (navigator.appName == "Microsoft Internet Explorer") PreView.document.writeln("</HEAD><BODY BGCOLOR=FFFFFF TEXT=000000 onload=" + '"preload()"' +">"); else PreView.document.writeln("</HEAD><BODY BGCOLOR=FFFFFF TEXT=000000>");
PreView.document.writeln("<FORM><CENTER>");
if (navigator.appName == "Microsoft Internet Explorer") PreView.document.writeln("<IMG HSPACE=0 VSPACE=0 " + "SRC='" + bildsrc + "' + width='"+b+"' + height='"+h+"' + alt='Bild wird geladen, bitte um Geduld...'>"); else PreView.document.writeln("<IMG HSPACE=0 VSPACE=0 " + "SRC='" + bildsrc + "' + width='"+b+"' + height='"+h+"' + alt='"+titel+"'>");
PreView.document.writeln(" "+inhalt);
PreView.document.writeln("<HR><FORM><INPUT TYPE='button' VALUE='Schlie&szlig;en' " +
"onClick='window.close()'></FORM>");
PreView.document.writeln("</CENTER>");
PreView.document.writeln("</BODY></HTML>");
PreView.document.close();
    }
function zu()
{
   if (PreView != null)
     if (!PreView.closed)
        if (PreView.close)
           PreView.close(); 
}
