tracer says to #ysitd
c;return(c=k.dom.nativelySupportsFocus_(a)?!a.disabled&&(!k.dom.hasSpecifiedTabIndex_(a)||k.dom.isTabIndexFocusable_(a)):k.dom.isFocusableTabIndex(a))&&k.userAgent.IE?k.dom.hasNonZeroBoundingRect_(a):c};k.dom.hasSpecifiedTabIndex_=function(a){a=a.getAttributeNode("tabindex");return k.isDefAndNotNull(a)&&a.specified};k.dom.isTabIndexFocusable_=function(a){a=a.tabIndex;return k.isNumber(a)&&0<=a&&32768>a};k.dom.nativelySupportsFocus_=function(a){return