/* Horizontal Tabs: */
function show(elementid, total)
{
	
	hideall(total);
	document.getElementById(elementid).style.display = 'block';
	document.getElementById(elementid).style.visibility = 'visible';	
	document.getElementById(elementid + '_tab').style.borderBottom = 'solid 1px #FFFFFF';	
	document.getElementById(elementid + '_tab').style.background = '#FFFFFF';	
		
	return;
}
function hide(elementid)
{
	//alert('hiding: '+ elementid);
	document.getElementById(elementid).style.display = 'none';
	document.getElementById(elementid + '_tab').style.borderBottom = 'solid 1px #257EA3';
	document.getElementById(elementid + '_tab').style.background = '#FFFCD5';	
	return;
}


// helper function to close all currently open units:
function hideall(tabcount){
	
	//alert('hiding all: ' + tabcount);
	for(i = 0; i < tabcount; i++){
		hide('tabpage_'+i);
	}
	return;
	
}

/* Vertical Tabs: */
function vshow(elementid, total)
{
	
	vhideall(total);
	
	document.getElementById(elementid).style.display = 'block';
	document.getElementById(elementid).style.visibility = 'visible';	
	document.getElementById(elementid + '_tab').style.border = 'solid 1px #257EA3';
	document.getElementById(elementid + '_tab').style.background = '#FEFF81';
		
	return;
}
function vhide(elementid)
{
	//alert('hiding: '+ elementid);
	document.getElementById(elementid).style.display = 'none';
	document.getElementById(elementid + '_tab').style.border = 'solid 1px #FFFFFF';
	document.getElementById(elementid + '_tab').style.background = '#FFFFFF';
	return;
}


// helper function to close all currently open units:
function vhideall(tabcount){
	
	//alert('hiding all: ' + tabcount);
	for(i = 0; i < tabcount; i++){
		vhide('vtabpage_'+i);
	}
	return;
	
}

function switchnova(picname){
	document.getElementById('nova_pic').src = '../img/'+ picname + '.gif';	
}