$(document).ready(function(){ 
     
     //PNG FIX for IE6
    if($.browser.msie && $.browser.version.substr(0,1) == 6 ){
        DD_belatedPNG.fix('h1#logo a, #header, .button-left a, .button-right img, .contact-holder .map img, .contact-holder, .contact-holder .address img, #main .services .left img, #main .services .right img, #main .services .right .open, .news-page .news-holder .left-image img, #main .main-t, #main .main-b, #main .main-bg, .product-page #main .products .product p.logo img, .product-page #main .products ');
    }
    $('#contact-form').submit(function() {
		if ($(this).data('invalid')) {
			return false;
		}
		$.ajax('joinus.php', {
			type: 'POST',
			data: $(this).serializeArray()
		})
		.complete(function () {
	     	alert('Thank you!');
		});
	});
});