function urlencode(str)
	{
	str = str.replace('+', '%2B');
	return(str);
	}

function setVview()
	{
	if(document.getElementById("vView") != null)
		{
		var vView = document.getElementById("vView");
		
		for (i = 0; i < vView.childNodes.length; i++)
			{
			if(vView.childNodes[i].tagName == "IMG")
				{
				vView.childNodes[i].onclick = function()
					{
					document.getElementById("vViewer").style.display = "block";
					processData('Display=vView&ID='+ urlencode(this.src) +"&screenheight="+ screen.height, 'Vview');
					}
				}
			}
		}
	}

function unsetVview()
	{
	document.getElementById("vViewer").innerHTML = "";
	document.getElementById("vViewer").style.display = "none";
	}