function AddClass(b,a){KillClass(b,a);return b&&(b.className+=(b.className.length>0?" ":"")+a)}function KillClass(b,a){return b&&(b.className=b.className.replace(new RegExp("^"+a+"\\b\\s*|\\s*\\b"+a+"\\b","g"),""))}function HasClass(b,a){return(!b||!b.className)?false:(new RegExp("\\b"+a+"\\b")).test(b.className)};