$(document).ready(function() {
    $('#name').focus(function() {
        if (this.value == "Enter your name") this.value = "";
    });
    $('#name').blur(function() {
        if (this.value == "") this.value = "Enter your name";
    });
    $('#from').focus(function() {
        if (this.value == "Enter your email address") this.value = "";
    });
    $('#from').blur(function() {
        if (this.value == "") this.value = "Enter your email address";
    });
});