var browserType;

if (document.layers) {browserType = "nn4"}
if (document.all) {browserType = "ie"}
if (window.navigator.userAgent.toLowerCase().match("gecko")) {
   browserType= "gecko"
}

function loadDivContent()
{
  var reviewExists = false;
  if (browserType == "gecko" ) {
	if(document.getElementById("TitleReviewDiv")) {
		reviewExists = true;
		}
	}
  else if (browserType == "ie") {
     if (document.getElementById("TitleReviewDiv")) {
		reviewExists = true;
		}
	}
  else {
     	if(document.layers["TitleReviewDiv"]) {
		reviewExists = true;
		}
	}	
  show("TitleCitationDiv");
}

function hide(panelName2) {
  if (browserType == "gecko" )
     document.poppedLayer2 = 
         eval('document.getElementById(panelName2)');
  else if (browserType == "ie")
     document.poppedLayer2 = 
        eval('document.getElementById(panelName2)');
  else
     document.poppedLayer2 =   
        eval('document.layers[panelName2]');
  document.poppedLayer2.style.visibility = "hidden";
  document.poppedLayer2.style.display = 'none';
}

function show(panelName) {
  if (browserType == "gecko" )
     document.poppedLayer = 
         eval('document.getElementById(panelName)');
  else if (browserType == "ie")
     document.poppedLayer = 
        eval('document.getElementById(panelName)');
  else
     document.poppedLayer = 
         eval('document.layers[panelName]');
  if (panelName != 'ExportPanel')
  {
    if (panelExits('TitlePictureDiv')) { hide('TitlePictureDiv'); }
    if (panelExits('TitleCitationDiv')) { hide('TitleCitationDiv'); }
    if (panelExits('TitleReviewDiv')) { hide('TitleReviewDiv'); }
    if (panelExits('TitleEvalDiv')) { hide('TitleEvalDiv'); }
    if (panelExits('TitleTocDiv')) { hide('TitleTocDiv'); }
  }
  document.poppedLayer.style.visibility = "visible";
  document.poppedLayer.style.display = '';
}

function showMenu(panelName) {
  if (browserType == "gecko" )
     document.poppedLayer = 
         eval('document.getElementById(panelName)');
  else if (browserType == "ie")
     document.poppedLayer = 
        eval('document.getElementById(panelName)');
  else
     document.poppedLayer = 
         eval('document.layers[panelName]');
  document.poppedLayer.style.visibility = "visible";
  document.poppedLayer.style.display = '';
  
}

function panelExits(panelName) {
  if (browserType == "gecko" ) {
	if(document.getElementById(panelName)) {
		return true;
		}
	}
   else if (browserType == "ie") {
	if(document.getElementById(panelName)) {
		return true;
		}
	}
    else {
	    if(document.layers[panelName]) {
		    return true;
		}
	}

}

function getQueryVariable(variable) { 
  var query = window.location.search.substring(1); 
  var vars = query.split("&"); 
  for (var i=0;i<vars.length;i++) { 
    var pair = vars[i].split("="); 
    if (pair[0] == variable) { 
      return pair[1]; 
    } 
  } 
}