function showBranch(branch){
	var objBranch = document.getElementById(branch).style;
	var imgBranch = document.getElementById(branch+"img");

	if(objBranch.display=="block") {
		imgBranch.src = "/images/arrow_closed.gif";
		objBranch.display="none";

	}
	else {
		objBranch.display="block";	
		imgBranch.src = "/images/arrow_opened.gif";
	}

}