YUI.add("datasource-polling",function(D){var B=D.Lang,A=D.DataSource,C=function(){};C.prototype={_intervals:null,setInterval:function(G,F,I){if(B.isNumber(G)&&(G>=0)){var E=this,H=setInterval(function(){E.sendRequest(F,I);},G);if(!this._intervals){this._intervals=[];}this._intervals.push(H);return H;}else{}},clearInterval:function(G){var F=this._intervals||[],E=F.length-1;for(;E>-1;E--){if(F[E]===G){F.splice(E,1);clearInterval(G);}}}};D.Base.build(A,[C],{dynamic:false});},"@VERSION@",{requires:["datasource-base"]});