var g_objMenuItem = null;

function rollOverButton(td){
	if (td.background == "images/sidebutton_over.gif"){
		td.background = "images/sidebutton.gif";
	}
	else{
		td.background = "images/sidebutton_over.gif";
	}
	return
}

function popupMenu(objMenuItem,bShow){
	if (bShow == true){
		g_objMenuItem = objMenuItem;
		if (g_objMenuItem.style.visibility != 'visible'){
			g_objMenuItem.style.top=event.y-12;
			g_objMenuItem.style.left=135;
		}
		g_objMenuItem.style.visibility='visible';
	}
	else{
		if (g_objMenuItem != null){
			g_objMenuItem.style.visibility='hidden';
			g_objMenuItem = null;
		}
	}
	return
}