function showBranch(branch){
	var o = document.getElementById(branch).style;
	o.display = (o.display == "block") ? "none" : "block";
}

function swapFolder(folder){
var o = document.getElementById(folder).style;
	o.backgroundImage = (o.backgroundImage == "url(images/button_back_down.gif)") ? "url(images/button_back.gif)" : "url(images/button_back_down.gif)";
}