function aleatorio(inferior,superior){
		
		var numPosibilidades = superior - inferior
		var aleat = Math.random() * numPosibilidades
		return Math.round(parseInt(inferior) + aleat)
	}	
	
	
	function print_banners(vetorBannersEscolhidos){
	
		for(var i=0; i < vetorBannersEscolhidos.length;i++)		
				document.write(vetorBannersEscolhidos[i]);
		
	}


	
	function exibe_banners(qtde){

		var banners = new Array();
		
		banners[0] = new Array('images/banners/banner_3m.jpg','m-10-3m.aspx',false);
		banners[1] = new Array('images/banners/banner_acrilex.jpg','m-32-acrilex.aspx',false);
		banners[2] = new Array('images/banners/banner_agabe.jpg','m-3-agab.aspx',true);	
		banners[3] = new Array('images/banners/banner_audi.jpg','m-28-audi.aspx',false);	
		banners[4] = new Array('images/banners/banner_genesis.jpg','m-31-gnesis.aspx',false);	
		banners[5] = new Array('images/banners/banner_imah.jpg','m-17-imah.aspx',false);	
		banners[6] = new Array('images/banners/banner_imprimax.jpg','m-35-imprimax.aspx',false);	
		banners[7] = new Array('images/banners/banner_olfa.jpg','m-7-olfa.aspx',false);	
		banners[8] = new Array('images/banners/banner_saturno.jpg','m-30-saturno.aspx',false);
		banners[9] = new Array('images/banners/banner_steinel.jpg','m-12-steinel.aspx',false);
		
		banners[10] = new Array('images/banners/banner_foteco.jpg','m-2-foteco.aspx',false);
		banners[11] = new Array('images/banners/banner_verseidag.jpg','m-36-verseidag.aspx',false);
		banners[12] = new Array('images/banners/banner_imagraf.jpg','m-33-imagraf.aspx',false);
		banners[13] = new Array('images/banners/banner_philips.jpg','m-15-philips.aspx',false);		
		
		banners[14] = new Array('images/banners/banner_tridentdesegraf.jpg','m-21-trident-desegraph.aspx',false);				
		banners[15] = new Array('images/banners/banner_aka.jpg','m-44-aka.aspx',false);						

		
		


		var fixos = new Array();
		var outros = new Array();

		for(var i=0 ; i<banners.length ; i++){			
			if(banners[i][2])				
				fixos.push(new Array('<a href=\''+banners[i][1]+'\' onfocus=\'blur(this);\'><img src=\''+banners[i][0]+'\' border=\'0\'></a><br/><br/>'));		
			else
				outros.push(i);				
		}
					
				

		
		var qtdeasortear = qtde - fixos.length;
		
		
		if(qtdeasortear > 0){				
					
			for(var j=0; j < qtdeasortear; j++){		
			
				var numSorteado = aleatorio(0,outros.length-1);
				var indice = outros[numSorteado];
				
				fixos.push(new Array('<a href=\''+banners[indice][1]+'\' onfocus=\'blur(this);\'><img src=\''+banners[indice][0]+'\' border=\'0\'></a><br/><br/>'));		
				outros.splice(numSorteado,1);
			
			}
			
		
		}
		
		print_banners(fixos);
	
	}