;(function(Modernizr,window){Modernizr.addTest('positionfixed',function(){var test=document.createElement('div'),control=test.cloneNode(false),fake=false,root=document.body||(function(){fake=true;return document.documentElement.appendChild(document.createElement('body'));}());var oldCssText=root.style.cssText;root.style.cssText='padding:0;margin:0';test.style.cssText='position:fixed;top:42px';root.appendChild(test);root.appendChild(control);var ret=test.offsetTop!==control.offsetTop;root.removeChild(test);root.removeChild(control);root.style.cssText=oldCssText;if(fake){document.documentElement.removeChild(root);}
return ret;});Modernizr.addTest('iospositionfixed',function(){var test=document.createElement('div'),ret,fake=false,root=document.body||(function(){fake=true;return document.documentElement.appendChild(document.createElement('body'));}());if(typeof document.body.scrollIntoViewIfNeeded==='function'){var oldCssText=root.style.cssText,testScrollTop=20,originalScrollTop=window.pageYOffset;root.appendChild(test);test.style.cssText='position:fixed;top:0px;height:10px;';root.style.height="3000px";var testScroll=function(){if(ret===undefined){test.scrollIntoViewIfNeeded();if(window.pageYOffset===testScrollTop){ret=true;}else{ret=false;}}
window.removeEventListener('scroll',testScroll,false);}
window.addEventListener('scroll',testScrollTop,false);window.setTimeout(testScroll,20);window.scrollTo(0,testScrollTop);testScroll();root.removeChild(test);root.style.cssText=oldCssText;window.scrollTo(0,originalScrollTop);}else{ret=Modernizr.positionfixed;}
if(fake){document.documentElement.removeChild(root);}
return ret;});})(Modernizr,window);