function updateDiv(id,url,pars){new Ajax.Request(url,{method:'get',parameters:pars,onSuccess:(function(req){$(id).update(req.responseText);}).bind(this),onFailure:function(r){alert(r.responseText)},onException:function(t,e){alert(e);}});}
var MyUtils = {toggle: function(element, show) {element = $(element);Element[show? 'show' : 'hide'](element);return element;}}
Element.addMethods(MyUtils);
function trim(str){return str.replace(/^\s*|\s*$/g,"");}