function premier1(n) {
    for(var i = 1; i < 4; i++) {
        obj = document.getElementById('premier'+i);
        img = document.getElementById('premier_button'+i);
        if ( n == i ) {
            obj.style.display = "block";
            img.height = 22;
            img.src = "com/images/main_tab0"+i+"_on.gif";    
        } else {
            obj.style.display = "none";
            img.height = 22;
            img.src = "com/images/main_tab0"+i+".gif";
        }
    }
}

function premier2(n) {
    for(var i = 1; i < 4; i++) {
        obj = document.getElementById('premier'+i);
        img = document.getElementById('premier_button'+i);
        if ( n == i ) {
            obj.style.display = "block";
            img.height = 22;
            img.src = "com/images/main_tab0"+i+"_on.gif";    
        } else {
            obj.style.display = "none";
            img.height = 22;
            img.src = "com/images/main_tab0"+i+"_e.gif";
        }
    }
}

function premier3(n) {
    for(var i = 1; i < 4; i++) {
        obj = document.getElementById('premier'+i);
        img = document.getElementById('premier_button'+i);
        if ( n == i ) {
            obj.style.display = "block";
            img.height = 22;
            img.src = "com/images/main_tab0"+i+"_on.gif";    
        } else {
            obj.style.display = "none";
            img.height = 22;
            img.src = "com/images/main_tab0"+i+"_m.gif";
        }
    }
}