msie = navigator.appVersion.indexOf("MSIE") != -1;

VisibleDiv = null;
VisibleImage = null;

function ShowOrHide(Division) 
{ 
  if (Division.style.display=="none")           
	{
	Division.style.display=""; 
	} 
  else 
   	{
   	Division.style.display="none"; 
   	} 
} 


function ShowDiv(Division) 
{ 
	Division.style.display=""; 
} 



function HideDiv(Division) 
{ 
	Division.style.display="none"; 
} 


// ---------- Tab management

function TabImageSrc(aTabName) {
  //return "buttons/"+aTabName+"_tab.jpg";
  return "../Images/Videos/"+aTabName+".jpg";
}

function SelectedTabImageSrc(aTabName) {
  return "../Images/Videos/"+aTabName+"_selected.jpg";
}

function PreloadTabImages(aTabNames) {
	for (var x = 0; x < aTabNames.length; x++) {
			image = new Image();
			image.src = TabImageSrc(aTabNames[x]);
			image = new Image();
			image.src = SelectedTabImageSrc(aTabNames[x]);
	}
}

function ShowTab(aTabName, aTabNames) {
	for (var x = 0; x < aTabNames.length; x++) {
		if (aTabNames[x] != aTabName)
		{
			document.images[aTabNames[x]+"_img"].src = TabImageSrc(aTabNames[x]);
			document.getElementById(aTabNames[x]).style.display="none";
		}
	}
	document.images[aTabName+"_img"].src = SelectedTabImageSrc(aTabName);
	document.getElementById(aTabName).style.display=""; 
}