// tabbed boxes
function switchTab(tabView,tabHide)
	{
	
		if (document.getElementById)
			{
				document.getElementById(tabView).style.display = "block";
				document.getElementById(tabHide).style.display = "none";
				
				return false;
			}
	}

function switchFourTab(tabView,tabHide1,tabHide2,tabHide3)
	{
	
		if (document.getElementById)
			{
				document.getElementById(tabView).style.display = "block";
				document.getElementById(tabHide1).style.display = "none";
				document.getElementById(tabHide2).style.display = "none";
				document.getElementById(tabHide3).style.display = "none";
				
				return false;
			}
	}

function switchFiveTab(tabView,tabHide1,tabHide2,tabHide3,tabHide4)
	{
	
		if (document.getElementById)
			{
				document.getElementById(tabView).style.display = "block";
				document.getElementById(tabHide1).style.display = "none";
				document.getElementById(tabHide2).style.display = "none";
				document.getElementById(tabHide3).style.display = "none";
				document.getElementById(tabHide4).style.display = "none";
				
				return false;
			}
	}

function switchSixTab(tabView,tabHide1,tabHide2,tabHide3,tabHide4,tabHide5)
	{
	
		if (document.getElementById)
			{
				document.getElementById(tabView).style.display = "block";
				document.getElementById(tabHide1).style.display = "none";
				document.getElementById(tabHide2).style.display = "none";
				document.getElementById(tabHide3).style.display = "none";
				document.getElementById(tabHide4).style.display = "none";
				document.getElementById(tabHide5).style.display = "none";
				
				return false;
			}
	}

function toggleLayer(whichLayer)
	{
		var elem, vis;
		if(document.getElementById) // this is the way the standards work
		elem = document.getElementById(whichLayer);
		else if(document.all) // this is the way old msie versions work
		elem = document.all[whichLayer];
		else if(document.layers) // this is the way nn4 works
		elem = document.layers[whichLayer];
		vis = elem.style;
		// if the style.display value is blank we try to figure it out here
		if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)
		vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
		vis.display = (vis.display==''||vis.display=='block')?'none':'block';
	}