function switchTab(tabId) {
	var children = $('additional-tabs').getElementsByTagName('LI');
	for(var i=0; i<children.length; i++) {
		switch($(children[i]).className) {
			case "special": break;
			default: $(children[i]).className = ''; break;
		}
	}
	$('additional-tab-'+tabId).className += " active";
	
	children = $('additional-tabs-content').getElementsByTagName('LI');
	for(var i=0; i<children.length; i++) {
	 if($(children[i]).className == 'tab-content' || $(children[i]).className == 'tab-content active')
		$(children[i]).className = 'tab-content';
	}
	$('addit-tab-content-'+tabId).className += " active";
}