function doOnBlur(obj, nSel) {
    switch (nSel) {
        case 1:
            obj.className = 'inputText';
            if (obj.value.replace(/ /g,'') == '')
            obj.value = "votre e-mail ici";
        break;
    }
}

function doOnFocus(obj,nSel) {
    switch (nSel) {
        case 1:
            obj.className = 'inputText-over';
            if (obj.value == "votre e-mail ici")
            obj.value = "";
        break;
    }
}