function expand(obj,_tab)
{
	if(obj.innerHTML.indexOf("plus")>0)
	{
		obj.innerHTML="<IMG width=11 height=11 alt=\"ÊÕËõ\" src=\"../images/minus.gif\">";

		_tab.style.display="";
	}
	else
	{
		obj.innerHTML="<IMG width=11 height=11 alt=\"Õ¹¿ª\" src=\"../images/plus.gif\">";
		_tab.style.display="none";
	}
}

function collapse(img, objName)
{
	var obj;
	obj = document.getElementById(objName);
	if (img.src.indexOf('open') != -1)
	{
		img.src = img.src.replace('open', 'close');
		obj.style.display = 'none';
	}
	else
	{
		img.src = img.src.replace('close', 'open');
		obj.style.display = '';
	}
}