  function goback()
  {
  var backval = getValue("back");
//  alert (backval);
  document.write ('<span class=normal>');
  document.write('<a href="' + backval + '">Zurück zur Reisebeschreibung</a>');
  document.write ('</span>');
  }
  function getValue (varname)
  {
    var url = window.location.href; var qparts = url.split("?");
    if (qparts.length == 0) { return ""; }
    var query = qparts[1];  var vars = query.split("&"); var value = "";
    for (i=0;i<vars.length;i++) { var parts = vars[i].split("="); if (parts[0] == varname) { value = parts[1]; break; } }
    value = unescape(value);
    return value;
   } 
  function createimage ()
  { 
   browser = "MSIE";
   var defblock  = 190;
   if ((i = navigator.userAgent.indexOf("Chrome"))  >= 0)  {defblock = 112; browser = "CHROME"}
   if ((i = navigator.userAgent.indexOf("Firefox")) >= 0)  {defblock = 187; browser = "FIREFOX"}
   var winheight = window.screen.availHeight;
   // get passed variables
   var imagename    = getValue ("image");   
   var imagetext    = getValue ("text");  
   var imagesource  = getValue ("source");
   var imageheight  = getValue ("height"); 
   var bgcolor      = "FBFBD5";
   var textcolor    = "303030";
   if (imagesource == "ams") { bgcolor = "202020"; textcolor="c0c0c0";}
   if (imagesource == "rtb") { bgcolor = "202020"; textcolor="c0c0c0";}
   // alert ("Imagename: " + imagename);
   // alert ("Imagetext: " + imagetext);
   // alert ("Imagesource: " + imagesource);
   // alert ("Imageheight: " + imageheight);

   // calculate height for image 
   if (imageheight == 0) {imageheight = winheight - defblock;}
   var newtext = imagetext.replace("++", "&");
   var newtext2 = newtext.replace("<br>", " - ");
   var imagepath = "http://www.loc-ams.ch/" + imagesource + "/images2/" + imagename + ".jpg";
   //  alert ("Imagepath: " + imagepath);
   document.write ('<body bgcolor=' + bgcolor +'>');
   // Write title of image
   document.write ('<table width=100% align=center valign=center border=0 cellpadding=0 cellspacing=0><tr><td>');
   document.write ('<center>');
   document.write ("<div style='font-family: sans-serif, Verdana, Arial, Helvetica; font-size: 12px; color: #" + textcolor + ";' align='center'> <b>" + newtext2  + "</b></div>");
   document.write ("</td></tr></table>");
   // Display Image
   document.write ("<table width=100% align=center valign=center border=0 cellpadding=0 cellspacing=0><tr><td align=center>");
   document.write ("<img src='" + imagepath + "' height='" + imageheight + "' border='1' alt='" + newtext2 + "'></td></tr></table'>");
   //   slider();
   closetext (browser)
  }
  // Close window for Firefox and Chrome
  function closetext (browser)
  {
   if (browser == "FIREFOX") {
     document.write ("<table width=100%><tr><td class=sub1 valign=top align=center><a href='#' onclick='javascript:window.close()'>Fenster schliessen</A></td></tr></table>");
   }
   if (browser == "CHROME") {
     document.write ("<table width=100%><tr><td class=sub1 valign=top align=center><a href='#' onclick='javascript:window.close()'>Fenster schliessen</A></td></tr></table>");
   }
  }
 // with URL-Backreference
 function createimage2 ()
  { 
   browser = "MSIE";
   var defblock  = 200;
   if ((i = navigator.userAgent.indexOf("Chrome"))  >= 0)  {defblock = 112; browser = "CHROME"}
   if ((i = navigator.userAgent.indexOf("Firefox")) >= 0)  {defblock = 200; browser = "FIREFOX"}
   var winheight = window.screen.availHeight;
   // get passed variables
   var imagename    = getValue ("image");   
   var imagetext    = getValue ("text");  
   var imagesource  = getValue ("source");
   var imageheight  = getValue ("height"); 
   var urlbackref   = getValue ("urlbackref");
   var bgcolor      = "FBFBD5";
   var textcolor    = "303030";
   if (imagesource == "ams") { bgcolor = "202020"; textcolor="c0c0c0";}
   if (imagesource == "rtb") { bgcolor = "202020"; textcolor="c0c0c0";}
//     alert ("Imagename: "   + imagename);
//     alert ("Imagetext: "   + imagetext);
//     alert ("Imagesource: " + imagesource);
//     alert ("Imageheight: " + imageheight);
//     alert ("URL-Backref: " + urlbackref);

   // calculate height for image 
   if (imageheight == 0) {imageheight = winheight - defblock;}
   var newtext = imagetext.replace("++", "&");
   var newtext2 = newtext.replace("<br>", " - ");
   var imagepath = "http://www.loc-ams.ch/" + imagesource + "/images2/" + imagename + ".jpg";
   //  alert ("Imagepath: " + imagepath);
   document.write ('<body bgcolor=' + bgcolor +'>');
   // Write title of image
   document.write ('<table width=100% align=center valign=center border=0 cellpadding=0 cellspacing=0><tr><td>');
   document.write ('<center>');
   document.write ("<div style='font-family: sans-serif, Verdana, Arial, Helvetica; font-size: 12px; color: #" + textcolor + ";' align='center'> <b>" + newtext2  + "</b></div>");
   document.write ("</td></tr></table>");
   // Display Image
   document.write ("<table width=100% align=center valign=center border=0 cellpadding=0 cellspacing=0><tr><td align=center>");
   document.write ("<img src='" + imagepath + "' height='" + imageheight + "' border='1' alt='" + newtext2 + "'></td></tr></table'>");
 //  alert ("Call closetext2");
   document.write ("<table width=100% align=center border=0><tr><td class=sub1 valign=top align=center><a href='" + urlbackref + "'>Zurück</a></td></tr></table>");
}

function slider()
{
 document.write ('</tr></table><table align=center valign=center border=0 cellpadding=0 cellspacing=0><tr><td>');
 document.write ('<tr><td  height=15></td></tr><tr>');
 document.write ('<td  height="10" bgcolor="#FFFFFF"><div onMouseover="document.bgColor=\'#FFFFFF\'"><img src="popupbg.gif" alt="Maus &uuml;ber die Graustufen bewegen, um Hintergrund zu w&auml;hlen." width="32" height="10"></div></td>');
 document.write ('<td  height="10" bgcolor="#DEDEDE"><div onMouseover="document.bgColor=\'#DEDEDE\'"><img src="popupbg.gif" alt="Maus &uuml;ber die Graustufen bewegen, um Hintergrund zu w&auml;hlen." width="32" height="10"></div></td>');
 document.write ('<td  height="10" bgcolor="#CDCDCD"><div onMouseover="document.bgColor=\'#CDCDCD\'"><img src="popupbg.gif" alt="Maus &uuml;ber die Graustufen bewegen, um Hintergrund zu w&auml;hlen." width="32" height="10"></div></td>');
 document.write ('<td  height="10" bgcolor="#BCBCBC"><div onMouseover="document.bgColor=\'#BCBCBC\'"><img src="popupbg.gif" alt="Maus &uuml;ber die Graustufen bewegen, um Hintergrund zu w&auml;hlen." width="32" height="10"></div></td>');
 document.write ('<td  height="10" bgcolor="#ABABAB"><div onMouseover="document.bgColor=\'#ABABAB\'"><img src="popupbg.gif" alt="Maus &uuml;ber die Graustufen bewegen, um Hintergrund zu w&auml;hlen." width="32" height="10"></div></td>');
 document.write ('<td  height="10" bgcolor="#9A9A9A"><div onMouseover="document.bgColor=\'#9A9A9A\'"><img src="popupbg.gif" alt="Maus &uuml;ber die Graustufen bewegen, um Hintergrund zu w&auml;hlen." width="32" height="10"></div></td>');
 document.write ('<td  height="10" bgcolor="#898989"><div onMouseover="document.bgColor=\'#898989\'"><img src="popupbg.gif" alt="Maus &uuml;ber die Graustufen bewegen, um Hintergrund zu w&auml;hlen." width="32" height="10"></div></td>');
 document.write ('<td  height="10" bgcolor="#787878"><div onMouseover="document.bgColor=\'#787878\'"><img src="popupbg.gif" alt="Maus &uuml;ber die Graustufen bewegen, um Hintergrund zu w&auml;hlen." width="32" height="10"></div></td>');
 document.write ('<td  height="10" bgcolor="#676767"><div onMouseover="document.bgColor=\'#676767\'"><img src="popupbg.gif" alt="Maus &uuml;ber die Graustufen bewegen, um Hintergrund zu w&auml;hlen." width="32" height="10"></div></td>');
 document.write ('<td  height="10" bgcolor="#565656"><div onMouseover="document.bgColor=\'#565656\'"><img src="popupbg.gif" alt="Maus &uuml;ber die Graustufen bewegen, um Hintergrund zu w&auml;hlen." width="32" height="10"></div></td>');
 document.write ('<td  height="10" bgcolor="#454545"><div onMouseover="document.bgColor=\'#454545\'"><img src="popupbg.gif" alt="Maus &uuml;ber die Graustufen bewegen, um Hintergrund zu w&auml;hlen." width="32" height="10"></div></td>');
 document.write ('<td  height="10" bgcolor="#343434"><div onMouseover="document.bgColor=\'#343434\'"><img src="popupbg.gif" alt="Maus &uuml;ber die Graustufen bewegen, um Hintergrund zu w&auml;hlen." width="32" height="10"></div></td>');
 document.write ('<td  height="10" bgcolor="#232323"><div onMouseover="document.bgColor=\'#232323\'"><img src="popupbg.gif" alt="Maus &uuml;ber die Graustufen bewegen, um Hintergrund zu w&auml;hlen." width="32" height="10"></div></td>');
 document.write ('<td  height="10" bgcolor="#121212"><div onMouseover="document.bgColor=\'#121212\'"><img src="popupbg.gif" alt="Maus &uuml;ber die Graustufen bewegen, um Hintergrund zu w&auml;hlen." width="32" height="10"></div></td>');
 document.write ('<td  height="10" bgcolor="#000000"><div onMouseover="document.bgColor=\'#000000\'"><img src="popupbg.gif" alt="Maus &uuml;ber die Graustufen bewegen, um Hintergrund zu w&auml;hlen." width="32" height="10"></div></td>');
}
