function function1() {
        document.getElementById("bannercuerpo").className = "clasedos";
        document.getElementById('hrefcuerpo').href = "?q=node/298";
        document.getElementById('hrefitemA').href = "?q=node/752";
        document.getElementById('hrefitemB').href = "?q=node/525";
        document.getElementById('hrefitemC').href = "?q=node/312";
        timer2();
    }

    function function2() {
        document.getElementById("bannercuerpo").className = "clasetres";
        document.getElementById('hrefcuerpo').href = "?q=node/9";
        document.getElementById('hrefitemA').href = "?q=node/11";
        document.getElementById('hrefitemB').href = "?q=node/328";
        document.getElementById('hrefitemC').href = "?q=node/29";
        timer3();
    }

    function function3() {
        document.getElementById("bannercuerpo").className = "claseuno";
        document.getElementById('hrefcuerpo').href = "?q=node/273";
        document.getElementById('hrefitemA').href = "?q=node/308";
        document.getElementById('hrefitemB').href = "?q=node/522";
        document.getElementById('hrefitemC').href = "?q=node/297";
        timer1();
    }
    
    function timer1() {
     setTimeout("function1()",9000);
     }

    function timer2() {
     setTimeout("function2()",9000);
     }

    function timer3() {
     setTimeout("function3()",9000);
     }