function flag_warning(text, type) {
    if ( document.getElementById ) {
        warning = document.getElementById('warning');
        warning.clsname = type;
        warning.innerHTML = "<p>"+text+"</p>";
    }
}

var invalid = false;
function highlightRequiredField(field) {
    if ($(field).value == '' ) {
        $(field).className = "requiredError";
        invalid = ( invalid==true ? invalid : true );
    } else {
        $(field).className = "";
    }
}
function checkContactForm() { 
    invalid = false;
    highlightRequiredField('name');
    highlightRequiredField('email');   
    highlightRequiredField('enquiry');
    
    if ( $('subscribe').value == 'Please Select' ) {
        invalid = false;
        $('subscribe').className = 'requiredError';
           
    }
    if ( invalid == true ){
        $('errorContainer').innerHTML = "Please complete all highlighted fields";
        $('errorContainer').className = "errorContainer";
        return false;
    } else {
        return true;    
    }
}