$(document).ready(function(){


	setTimeout("change()",20000);
	
	

});

var indice = 1;
	function change(){
		if(indice%2 != 0){
		$("#img1").attr("src","img/parc/"+indice+".jpg");
		}
		else {
		$("#img2").attr("src","img/parc/"+indice+".jpg");
		}
		
		indice++;
		if(indice == 18){indice = 1;}
		
		setTimeout("change()",3000);
		
	}