function toggle_divs(div_to_show, div_to_hide){

	if (div_to_hide instanceof Array){
	
     	for (var i=0;i<div_to_hide.length;++i){
       	
   			$(div_to_hide[i]).hide();  
     	}
		
	}else{
		
		$(div_to_hide).hide();
	}
	
	new Effect.SlideDown(div_to_show, { queue: 'end' });
	
}

function show_hide_div(div, show){
	
	if(show){
		
		new Effect.SlideDown(div, { queue: 'end' });
		
	}else{
		
		new Effect.SlideUp(div, { queue: 'end' });
	}
}