var lastOver = null;
var lastOverTo = null;

function center()
{
	var posLeft = Math.ceil(document.getElementById('master').offsetWidth/2) - 600;
	if (posLeft < 0)
		posLeft = 0;
	var posTop = Math.ceil(document.getElementById('master').offsetHeight/2) - 338;
	if (posTop < 0)
		posTop = 0;
	//document.getElementById('masterContent').style.left = posLeft+'px';
	document.getElementById('masterContent').style.top = posTop+'px';
}

function showSub(to, id, param)
{
	if (to == '' && id == '') {
		to = lastOverTo;
		id = lastOver;
	}
	else {
		lastOver = id;
		lastOverTo = to;
		var top = parseInt(document.getElementById(to).offsetHeight);
		top += parseInt(document.getElementById(to).clientHeight);
		
		if (param) {
			document.getElementById(to).className = "activMaster"+id;
			document.getElementById('sub' + id).style.display = 'block';
		}
		else {
			document.getElementById(to).className = "";
			document.getElementById('sub' + id).style.display = 'none';
		}	
	}	
}