function hidediv() {
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById('hideshow').style.display='block';
	}
	else {
		if (document.layers) { // Netscape 4
			document.hideshow.dislpay = 'block';
		}
		else { // IE 4
			document.all.hideshow.style.display = 'block';
		}
    }
}

function showdiv() {
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById('hideshow').style.visibility = 'visible';
	}
	else {
		if (document.layers) { // Netscape 4
			document.hideshow.visibility = 'visible';
		}
		else { // IE 4
			document.all.hideshow.style.visibility = 'visible';
		}
	}
}
	
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';
}