(function(jQuery){jQuery.fn.lazyload=function(options){var settings={threshold:0,failurelimit:0,event:"scroll",effect:"show",container:window};if(options){jQuery.extend(settings,options);}
var elements=this;if("scroll"==settings.event){jQuery(settings.container).bind("scroll",function(event){var counter=0;elements.each(function(){if(jQuery.abovethetop(this,settings)||jQuery.leftofbegin(this,settings)){}else if(!jQuery.belowthefold(this,settings)&&!jQuery.rightoffold(this,settings)){jQuery(this).trigger("appear");}else{if(counter++>settings.failurelimit){return false;}}});var temp=jQuery.grep(elements,function(element){return!element.loaded;});elements=jQuery(temp);});}
this.each(function(){var self=this;if(undefined==jQuery(self).attr("original")){jQuery(self).attr("original",jQuery(self).attr("src"));}
if("scroll"!=settings.event||undefined==jQuery(self).attr("src")||settings.placeholder==jQuery(self).attr("src")||(jQuery.abovethetop(self,settings)||jQuery.leftofbegin(self,settings)||jQuery.belowthefold(self,settings)||jQuery.rightoffold(self,settings))){if(settings.placeholder){jQuery(self).attr("src",settings.placeholder);}else{jQuery(self).removeAttr("src");}
self.loaded=false;}else{self.loaded=true;}
jQuery(self).one("appear",function(){if(!this.loaded){jQuery("<img />").bind("load",function(){jQuery(self).hide().attr("src",jQuery(self).attr("original"))
[settings.effect](settings.effectspeed);self.loaded=true;}).attr("src",jQuery(self).attr("original"));};});if("scroll"!=settings.event){jQuery(self).bind(settings.event,function(event){if(!self.loaded){jQuery(self).trigger("appear");}});}});jQuery(settings.container).trigger(settings.event);return this;};jQuery.belowthefold=function(element,settings){if(settings.container===undefined||settings.container===window){var fold=jQuery(window).height()+jQuery(window).scrollTop();}else{var fold=jQuery(settings.container).offset().top+jQuery(settings.container).height();}
return fold<=jQuery(element).offset().top-settings.threshold;};jQuery.rightoffold=function(element,settings){if(settings.container===undefined||settings.container===window){var fold=jQuery(window).width()+jQuery(window).scrollLeft();}else{var fold=jQuery(settings.container).offset().left+jQuery(settings.container).width();}
return fold<=jQuery(element).offset().left-settings.threshold;};jQuery.abovethetop=function(element,settings){if(settings.container===undefined||settings.container===window){var fold=jQuery(window).scrollTop();}else{var fold=jQuery(settings.container).offset().top;}
return fold>=jQuery(element).offset().top+settings.threshold+jQuery(element).height();};jQuery.leftofbegin=function(element,settings){if(settings.container===undefined||settings.container===window){var fold=jQuery(window).scrollLeft();}else{var fold=jQuery(settings.container).offset().left;}
return fold>=jQuery(element).offset().left+settings.threshold+jQuery(element).width();};jQuery.extend(jQuery.expr[':'],{"below-the-fold":"jQuery.belowthefold(a, {threshold : 0, container: window})","above-the-fold":"!jQuery.belowthefold(a, {threshold : 0, container: window})","right-of-fold":"jQuery.rightoffold(a, {threshold : 0, container: window})","left-of-fold":"!jQuery.rightoffold(a, {threshold : 0, container: window})"});})(jQuery);