function overlay() {
	var overlay = $("div#overlay");
	if(overlay.is(':hidden'))
		overlay.show("normal");
	else
		overlay.hide("normal");
	return false;
}

function tag(tag1, tag2) {
	var textfield = document.getElementById('addBBhere');
	if (document.selection) {
		textfield.focus();
		var sel = document.selection.createRange(); 
		sel.text = tag1 + sel.text + tag2; 
	} else {
		var len = textfield.value.length; 
		var start = textfield.selectionStart; 
		var end = textfield.selectionEnd; 
		var scrollTop = textfield.scrollTop;
		var scrollLeft = textfield.scrollLeft;
		var sel = textfield.value.substring(start, end);
		var rep = tag1 + sel + tag2; 
		textfield.value =  textfield.value.substring(0,start) + rep + textfield.value.substring(end,len); 
		textfield.scrollTop = scrollTop; 
		textfield.scrollLeft = scrollLeft; 
   }
}

function menu(tab) {
	var tab = tab;
	if(!($("div#menu ul li#"+tab).hasClass('active'))) {
		$("div#menu ul li").removeClass();
		$("div#menu ul li#"+tab).addClass('active');
		$("div#tabs ul").slideUp("normal");
		$("div#tabs ul#tab_"+tab+":hidden").slideDown("normal");
	}
	return false;
}