function inFocus(el) {
    if(el.value == "Nome")
        el.value = "";
    if(el.value == "E-mail")
        el.value = "";
}

function outFocus(el) {
    if(el.value == "") {
        if(el.name == "txtNome")
            el.value = "Nome";
        if(el.name == "txtEmail")
            el.value = "E-mail";
    }
}

function submitForm(frm) {
    for(i=0; i < frm.elements.length; i++) {
        var item = frm.elements[i];
        if( ( item.type == "text" && item.value == "" ) || ( item.tagName == "SELECT" && item.value == "" ) ||
            ( frm["txtNome"].value == "Nome" || frm["txtEmail"].value == "E-mail"  ) ) {
            alert("Preencha todos os campos.");
            return false;
        }
    }
}