function del(del){
	new Ajax.Updater('prices_change', 'include/changeDel.php', {
		method: 'get',
		parameters: "?d="+del
	});
}

function change_image(id){
	new Ajax.Updater('main_image', '/includesProd/change_image.php', {
		method: 'get',
		parameters: "?i="+id
	});
}

function clearText(field){
    if (field.defaultValue == field.value) field.value = '';
    else if (field.value == '') field.value = field.defaultValue;

}