function filter(url, idMake, idBody, sort_y, sort_p){
     
     var target = 'pr';
     var myAjax = new Ajax.Updater(
     	target, url, 
     	{
     		method: 'post',
     		onLoading: loading_list 
     	}
     );
}

function getModels(url){
     
     var target = 'models';
     var myAjax = new Ajax.Updater(
     	target, url, 
     	{
     		method: 	'post',
     		onLoading: 	loading_list
     	}
     );
}

function loading_list(){
	Element.show('loading_list');
}