function ClearEditValue(edt){
   edt.value = '';
   return true;
}
function FillEditValue(edt,Msg){
   if (edt.value === '') {
      edt.value = Msg;
   }
   return true;
}
function ShowDtnHelp(edt){
  document.getElementById('dtnhelptext').style.display = 'block';
  return true;
}
function HideDtnHelp(edt){
  var lbl ;
  lbl = document.getElementById('dtnhelptext');
  lbl.style.display = 'none';
  return true;
}
function WriteArtMU (){
   document.write("<select class='muntselect' name='edt_ArtMU' size='1'>");
   var sMU = ReadFromCookie('ArtMU');
   if (sMU === null) sMU = "EUR";
   WriteOption(sMU,'EUR','EUR');
   WriteOption(sMU,'USD','USD');
   WriteOption(sMU,'GBP','GBP');
   WriteOption(sMU,'AUD','AUD');
   WriteOption(sMU,'JPY','JPY');
   WriteOption(sMU,'CAD','CAD');
   document.write("</select>");
}
function WriteArtYC ()
{
   document.write("<select name='edt_ArtYC' size='1'>");
   var sYC = ReadFromCookie('ArtYC');
   if (sYC === null) sYC = "*";
   if (sYC.indexOf('-') != -1 ){
      WriteOption(sYC, sYC, sYC );
   }
   WriteOption(sYC,'*','&lt;all periods&gt;');  // 135    =All periods
   WriteOption(sYC,'1','- 1800');
   WriteOption(sYC,'2','1800-1850');
   WriteOption(sYC,'3','1850-1875');
   WriteOption(sYC,'4','1870-1900');
   WriteOption(sYC,'5','1900-1910');
   WriteOption(sYC,'6','1910-1920');
   WriteOption(sYC,'7','1920-1930');
   WriteOption(sYC,'8','1930-1950');
   WriteOption(sYC,'9','1950-1970');
   WriteOption(sYC,'A','1970 +');
   document.write("</select>");
}