function hidediv(div) { 
	if (document.getElementById) { // DOM3 = IE5, NS6 
		document.getElementById(div).style.display = 'none'; 
	} 
	else { 
		if (document.layers) { // Netscape 4 
			document.hideShow.display = 'none'; 
		} 
	else { // IE 4 
			document.all.hideShow.style.display = 'none'; 
		} 
	} 
} 

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

function hideTop() {
	parent.resizeFrame('28px,*');
	hidediv('banner');
	hidediv('hide');
	showdiv('show');
}

function showTop(topHeight) {
	showdiv('banner');
	hidediv('show');
	showdiv('hide');
	parent.resizeFrame(topHeight + 'px,*');
}