var timeout = 10000 ;
	var max_el = 3;
	var slides_link = new Array ('crops.htm', 'livestock.htm', 'food.htm');

	var cur_num_slide = 0;
	
	function set_num(num_slide) {
		clearInterval(intervalID);
		cur_num_slide = num_slide;
		
		document.getElementById('learn_more').className = 'learn_more_en learn_more_en_'+(num_slide+1);
		document.getElementById('learn_more_a').href = slides_link[num_slide];
		
		for(i=0; i<max_el; i++) {
			document.getElementById('menu2_'+i).className = 'link' + (i+1) ;
		}
		document.getElementById('menu2_'+num_slide).className = 'link' + (num_slide+1) + ' active';
		
		intervalID = setInterval( 'set_auto_num()', timeout );
	}

	function set_auto_num() {
		
		cur_num_slide ++;
		if( cur_num_slide >= max_el) cur_num_slide = 0;
		
		document.getElementById('learn_more').className = 'learn_more_en learn_more_en_'+(cur_num_slide+1);
		document.getElementById('learn_more_a').href = slides_link[cur_num_slide];
		
		for(i=0; i<max_el; i++) {
			document.getElementById('menu2_'+i).className = 'link' + (i+1) ;
		}
		document.getElementById('menu2_'+cur_num_slide).className = 'link' + (cur_num_slide+1) + ' active';
	}

	var intervalID = setInterval( 'set_auto_num()', timeout );