function text_limit(limit, field, span_field){
	if (document.getElementById(field).value.length > limit){
		document.getElementById(field).value = document.getElementById(field).value.substring(0, limit);
	}
	if(span_field.length > 0){
		txt = "";
		left_chars = limit - document.getElementById(field).value.length;
		txt = "Left " + left_chars + " chars of " + limit + "";
		document.getElementById(span_field).innerHTML = txt;
	}
}

function check_email(email){
	Wzor = /^[0-9a-zA-Z.-_\-]+\@[0-9a-zA-Z.-_\-]+\.[0-9a-zA-Z.]{2,4}$/;
	if (Wzor.test(email) == false){
		return false;	
	} else {
		return true;
	}
}

function show_hide_element(id){
	h = document.getElementById(""+id+"");
	h.style.display = (h.style.display == "none") ? "block" : "none";  
}

function save_quote(id){
	var url = 'http://www.audinationwide.co.uk/ajax_save_quote.php?product='+id+'';
	new Ajax.Request(url, {
		method: 'get',
		onSuccess: function(transport) {
			if (transport.responseText.match('ok')){
			  //alert('ok');
			} else {
			  //alert('no');
			}
		}
	});
}