function showhide(number, op, elements)
{
	for(var i=0; i<elements; i++){
		if(document.getElementById('div-' + op + '-' + i))
			document.getElementById('div-' + op + '-' + i).style.display = 'none';
	}
	if(document.getElementById('div-' + op + '-' + number))
		document.getElementById('div-' + op + '-' + number).style.display = 'block';
	document.getElementById('tabdesc_' + op).style.display = 'none';
}

function showhidetab(number, elements)
{
	for(var i=0; i<elements; i++){
		document.getElementById('tab_' + i).className = 'normal';
		if(document.getElementById('tabcontent_' + i))
			document.getElementById('tabcontent_' + i).style.display = 'none';
	}
	document.getElementById('tabcontent_' + number).style.display = 'block';
	document.getElementById('tab_' + number).className = 'current';
}

function ffmouseleave(e, number, op) {
	if (!e) var e = window.event;
	var relTarg = e.relatedTarget || e.toElement;
	if(relTarg && relTarg.id && (relTarg.id=='trngsubmenu' || relTarg.id=='opcontent' || relTarg.id=='trnleft' || relTarg.id=='trngmenu'))
		iemouseleave(number, op);
}

function iemouseleave(number, op)
{
	if(document.getElementById('div-' +  op + '-' + number))
		document.getElementById('div-' +  op + '-' + number).style.display = 'none';
	document.getElementById('tabdesc_' + op).style.display = 'block';
}