function MM_swapImgRestore() {
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() {
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_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);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() {
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function ChangeImg(img_name,img_src) {   
  document.getElementById(img_name).src = img_src;  
}

function toggleCitations( id ) {
  var divElement = document.getElementById( id );
  var txtElement = document.getElementById( id + '_text' );
  if( divElement.style.display == 'none' ) {          
    divElement.style.display = '';
    divElement.style.visibility = 'visible';
    txtElement.innerHTML = 'Hide Comments';
  } else {  // Collapse the branch if it is visible
    divElement.style.display = 'none';
    txtElement.innerHTML = 'Comments';
  }
}

function toggleReproductions( id ) {
  var divElement = document.getElementById( id );
  var txtElement = document.getElementById( id + '_text' );
  if( divElement.style.display == 'none' ) {
    divElement.style.display = '';
    divElement.style.visibility = 'visible';
    txtElement.innerHTML = 'Hide Reproductions';
  } else {  // Collapse the branch if it is visible
    divElement.style.display = 'none';
    txtElement.innerHTML = 'Reproductions';
  }
}

function expandAllBibReferences( from, to ) {
  // toggle citation references
  for( i = from; i <= to; i++ ) {
    var divElement = document.getElementById( 'citation' + i );
    var txtElement = document.getElementById( 'citation' + i + '_text' );
    if( divElement != null && txtElement != null ) {
      divElement.style.display = '';
      divElement.style.visibility = 'visible';
      txtElement.innerHTML = 'Hide Comments';
    }
  }
  // toggle reproduction references
  for( i = from; i <= to; i++ ) {
    var divElement = document.getElementById( 'reproduction' + i );
    var txtElement = document.getElementById( 'reproduction' + i + '_text' );
    if( divElement != null && txtElement != null ) {
      divElement.style.display = '';
      divElement.style.visibility = 'visible';
      txtElement.innerHTML = 'Hide Reproductions';
    }
  }
}

function collapseAllBibReferences( from, to ) {
  // toggle citation references
  for( i = from; i <= to; i++ ) {
    var divElement = document.getElementById( 'citation' + i );
    var txtElement = document.getElementById( 'citation' + i + '_text' );
    if( divElement != null && txtElement != null ) {
      divElement.style.display = 'none';
      txtElement.innerHTML = 'Comments';
    }
  }
  // toggle reproduction references
  for( i = from; i <= to; i++ ) {
    var divElement = document.getElementById( 'reproduction' + i );
    var txtElement = document.getElementById( 'reproduction' + i + '_text' );
    if( divElement != null && txtElement != null ) {
      divElement.style.display = 'none';
      txtElement.innerHTML = 'Reproductions';
    }
  }
}

function showFullSummary(msNo) {
  document.getElementById('summary'+msNo+'more').style.display = 'none';
  document.getElementById('summary'+msNo+'full').style.display = 'inline';
}

function showShortSummary(msNo) {
  document.getElementById('summary'+msNo+'full').style.display = 'none';
  document.getElementById('summary'+msNo+'more').style.display = 'inline';
}

function displayPopup(title,url,width,height) {
  var left = (screen.width  - width)/2;
  var top = (screen.height - height)/2;
  var params = 'width='+width+', height='+height;
  params += ', top='+top+', left='+left;
  params += ', directories=no';
  params += ', location=no';
  params += ', menubar=no';
  params += ', resizable=no';
  params += ', scrollbars=no';
  params += ', status=no';
  params += ', toolbar=no';
  newwin = window.open(url,title,params);
  if( window.focus ) {
    newwin.focus()
  }
  return false;
}

function clearManuscriptDescriptionSearchForm() {
  document.forms['manuscriptDescriptionSearchForm'].msNo.value = '';
  document.forms['manuscriptDescriptionSearchForm'].msTitle.value = '';
  document.forms['manuscriptDescriptionSearchForm'].textTitle.value = '';
  document.forms['manuscriptDescriptionSearchForm'].provenance.value = '';
  document.forms['manuscriptDescriptionSearchForm'].incipit.value = '';
  document.forms['manuscriptDescriptionSearchForm'].decoration.value = '';
  document.forms['manuscriptDescriptionSearchForm'].language.value = '';
}

function clearBibliographySearchForm() {
  document.forms['bibliographySearchForm'].primarySourceRef.value = '';
  document.forms['bibliographySearchForm'].title.value = '';
  document.forms['bibliographySearchForm'].journal.value = '';
  document.forms['bibliographySearchForm'].author.value = '';
  document.forms['bibliographySearchForm'].date.value = '';
  document.forms['bibliographySearchForm'].comment.value = '';
  var elements = document.getElementsByName('referenceTypes');
  for( i=0; i<elements.length; i++ ) {
    elements[i].checked = false;
  }
}