function show(a){
	a.style.display='';
	}
	function hide(a){
	a.style.display='none';
	}
	
	var butt1=new Image(); butt1.src='/img/sq_1.jpg';
	var butt2=new Image(); butt2.src='/img/sq_2.jpg';
	var butt3=new Image(); butt3.src='/img/sq_3.jpg';
	var butt4=new Image(); butt4.src='/img/sq_4.jpg';
	var butt5=new Image(); butt5.src='/img/sq_5.jpg';
	
	
	var button1=new Image(); butt1.src='/img/b_about_2.gif';
	var button2=new Image(); butt1.src='/img/b_iideas_2.gif';
	var button3=new Image(); butt1.src='/img/b_venues_2.gif';
	var button4=new Image(); butt1.src='/img/b_convcenters_2.gif';
	var button5=new Image(); butt1.src='/img/b_transportation_2.gif';
	var button6=new Image(); butt1.src='/img/b_hotels_2.gif';
	var button7=new Image(); butt1.src='/img/b_manager_2.gif';