var curTab = '';
var curPnl = '';
var itemNum = '';

function changeTab(showThis)
{
	if(curTab != '')
	{
		document.getElementById(curTab).className = 'tab_hide';
	}
	
	if(curPnl != '')
	{
		document.getElementById(curPnl).className = 'pnl_hide';
	}
	
	curTab = 'tab_' +showThis;
	curPnl = 'pnl_' +showThis;

	document.getElementById(curTab).className = 'tab_show';
	document.getElementById(curPnl).className = 'pnl_show';
	document.getElementById(curPnl).blur();
}

function hideShowItem(thisItem)
{

	if(itemNum != '')
	{
		curItem = 'i'+itemNum;
		plus = 'e'+itemNum;
		minus = 'c'+itemNum;
		document.getElementById(curItem).className = 'itemCollapse';
		document.getElementById(plus).className = 'inline';
		document.getElementById(minus).className = 'hidden';
	}
	curItem = 'i'+thisItem;
	plus = 'e'+thisItem;
	minus = 'c'+thisItem;
	document.getElementById(curItem).className = 'itemExpand';
	document.getElementById(minus).className = 'inline';
	document.getElementById(plus).className = 'hidden';
	
	itemNum = thisItem;
}

function hideItem(thisItem)
{
	curItem = 'i'+itemNum;
	plus = 'e'+itemNum;
	minus = 'c'+itemNum;
	document.getElementById(curItem).className = 'itemCollapse';
	document.getElementById(plus).className = 'inline';
	document.getElementById(minus).className = 'hidden';
	
	itemNum = thisItem;
}