function changeTab(tabindex,tabs)
{
	for (var i=1;i<=tabs;i++)
	{
	  if (i==tabindex)
	  {
		document.getElementById('tab' + i).className="tabContentSelected";
		document.getElementById('tabContent_' + i).style.display="block";
	  }
	  else
	  {
	  	document.getElementById('tab' + i).className="tabContent";
	  	document.getElementById('tabContent_' + i).style.display="none";
	  }
	}
}
function showTab(tabindex)
{
	document.getElementById('productDescription').style.display="none";
	document.getElementById('productAdditionaImage').style.display="none";
	//document.getElementById('productDownload').style.display="none";
	//document.getElementById('productDocument').style.display="none";
	//document.getElementById('productContact').style.display="none";
	switch (tabindex)
	{
		case 1: document.getElementById('productDescription').style.display="visible"; break;
		case 2: break;
		case 3: document.getElementById('productAdditionaImage').style.display="visible"; break;
		case 4: break;
		case 5: break;
	}
}
function download_this(fkey)
{
	document.location='download_it.php?key='+fkey;
}