tracer says to #ysitd
k.dom.getDocumentHeight_(window)};k.dom.getDocumentHeightForWindow=function(a){return k.dom.getDocumentHeight_(a)};k.dom.getDocumentHeight_=function(a){var c=a.document,d=0;if(c){var d=c.body,e=c.documentElement;if(!e||!d)return 0;a=k.dom.getViewportSize_(a).height;if(k.dom.isCss1CompatMode_(c)&&e.scrollHeight)d=e.scrollHeight!=a?e.scrollHeight:e.offsetHeight;else{var