var LazyPagination=new Class({Extends:Request.HTML,options:{buffer:1000,maxRequests:5,pageDataIndex:'page',data:{page:2},navigation:false,inject:false},initialize:function(element,options){this.parent(options);this.element=document.id(element);this.bound=this.measure.bind(this);this.requests=0;this.addEvent('onComplete',function(response,html){(this.options.inject)?this.inject(html[0]):this.adopt(html[0]);this.increment();this.measure();});if(this.options.navigation)document.id(this.options.navigation).destroy();this.attach();this.measure();},measure:function(){var scrollHeight=this.element.getScrollSize().y,height=this.element.getSize().y,scroll=this.element.getScroll().y;if(scrollHeight-height-this.options.buffer<=scroll)this.send();return this;},send:function(){if(this.check&&this.requests!=this.options.maxRequests)this.parent();},increment:function(){this.requests++;this.options.data[this.options.pageDataIndex]++;return this;},attach:function(){window.addEvent('resize',this.bound);this.element.addEvent('scroll',this.bound);return this;},detach:function(){window.removeEvent('resize',this.bound);this.element.removeEvent('scroll',this.bound);return this;},adopt:function(html){(this.element===document||this.element===window)?$(document.body).adopt(html):this.element.adopt(html);return this;},inject:function(html){html.inject(this.options.inject.element,this.options.inject.where);return this;}});