var pic=new Array(14);
pic[1]=new Image();
pic[2]=new Image();
pic[3]=new Image();
pic[4]=new Image();
pic[5]=new Image();
pic[6]=new Image();
pic[7]=new Image();
pic[8]=new Image();
pic[9]=new Image();
pic[10]=new Image();
pic[11]=new Image();
pic[12]=new Image();
pic[13]=new Image();
pic[14]=new Image();
pic[1].src="images/button_forum.jpg";
pic[2].src="images/button_news.jpg";
pic[3].src="images/button_gallery.jpg";
pic[4].src="images/button_screens.jpg";
pic[5].src="images/button_team.jpg";
pic[6].src="images/button_faq.jpg";
pic[7].src="images/button_tutorials.jpg";
pic[8].src="images/button_forum_frob.jpg";
pic[9].src="images/button_news_frob.jpg";
pic[10].src="images/button_gallery_frob.jpg";
pic[11].src="images/button_screens_frob.jpg";
pic[12].src="images/button_team_frob.jpg";
pic[13].src="images/button_faq_frob.jpg";
pic[14].src="images/button_tutorials_frob.jpg";
function frob_on(a,b){
	i=b+7;
	a.src=pic[i].src;
}	
function frob_off(a,b){
	i=b-7;
	a.src=pic[i].src;
}