function verifForm(iItemId){

	var bFocus = false;
	var sAlertCss = 'osb_form_element_alert';
	var sMessage = '';
	
	var oDiv = $('order_product_quantity_' + iItemId);
	
	// reinitialisation des input en alerte (cas d'une seconde tentative de validation)
	oDiv.className = '';
	
	// test des champs du formulaire
	if (!isPositiveInteger(oDiv.value)){
				
		sMessage += '<span style="margin-left: 30px;">' + gaLabels['PRODUCTS_QUANTITY'] + '</span><br />';

		oDiv.className = sAlertCss;

		if (! bFocus) {
			oDiv.focus();
			bFocus = true;
		}
	}
	
	// creation du message d'erreur
	if (sMessage == '') {
		return true;
	} else {
		sMessage = gaLabels['CHECK_FOLLOWING_INPUT'] + '<br />' + sMessage;
		displayMessage(sMessage);
		return false;
	}

}

function askAQuote(iProductId){
	$('product_id').value = iProductId;
	$('categories_products_form').action = shop_url_domain + 'quote.php';
	$('categories_products_form').submit();
}

// Tri
function setPageSort(sFormId, oElement) {
	$('page_sort_by').value = oElement.value;
	setPageNumber(sFormId, 1);
	$(sFormId).submit();
}

// Changement de page
function setPageNumber(sFormId, iPageNumber) {
	$('page_number').value = iPageNumber;
	$(sFormId).submit();
}