Fixed IE 8 crash bug and cleaned up some of the functions in DOMUtils.js.
Fixed IE 8 crash bug and cleaned up some of the functions in DOMUtils.js.

fashionsun/tinymce,collective/tinymce,rxl194/tinymce,mplank/tinymce,gabixdev/tinymce,Shopify/tinymce,rednose-public/tinymce,tinymce/tinymce,howanghk/tinymce,blakewallan/tinymce,mplank/tinymce,endjin/tinymce,gencer/tinymce,Zimbra/tinymce,pmpl-5/tinymce,toxalot/tinymce,dziemian007/tinymce,simachewh/tinymce,danchr/tinymce,Kindling/tinymce,cclaerhout/tinymce,1099511627776/tinymce,tinymce/tinymce,fashionsun/tinymce,bsuh/tinymce,ikuchmin/tinymce,toxalot/tinymce,shilpi230/tinymce,shilpi230/tinymce,support-dot-com/tinymce,M4R7iNP/tinymce,enfold/tinymce,henrythewasp/tinymce,aduth/tinymce,nikolas/tinymce,nbcp/tinymce,sachgits/tinymce,jtark/tinymce,kencheung/tinymce,MediehusetTek/tinymce,Razzwan/tinymce,VioletLife/tinymce,cclaerhout/tinymce,enfold/tinymce,danielpunkass/tinymce,ETSI-CTI/TinySpecMCE,sjbufton/tinymce,henrythewasp/tinymce,pmpl-5/tinymce,leofeyer/tinymce,FernCreek/tinymce,bsuh/tinymce,leofeyer/tinymce,fillabs/TinySpecMCE,howanghk/tinymce,nbcp/tinymce,rxl194/tinymce,ChristophKaser/tinymce,widgetfactory/tinymce,danchr/tinymce,gencer/tinymce,rednose-public/tinymce,kencheung/tinymce,adaptiffdesigns/tinymce,Razzwan/tinymce,ikuchmin/tinymce,nikolas/tinymce,adaptiffdesigns/tinymce,widgetfactory/tinymce,danielpunkass/tinymce,fhchina/tinymce,rbecheras/tinymce,ice8lue/tinymce,danielpunkass/tinymce,VioletLife/tinymce,FernCreek/tinymce,1099511627776/tinymce,tinymce/tinymce,MediehusetTek/tinymce,jashua212/tinymce,support-dot-com/tinymce,sachgits/tinymce,M4R7iNP/tinymce,jtark/tinymce,rbecheras/tinymce,TeamupCom/tinymce,endjin/tinymce,simachewh/tinymce,dziemian007/tinymce,ETSI-CTI/TinySpecMCE,blakewallan/tinymce,fillabs/TinySpecMCE,jashua212/tinymce,TeamupCom/tinymce,aduth/tinymce,gabixdev/tinymce,fhchina/tinymce,sjbufton/tinymce,Kindling/tinymce,ChristophKaser/tinymce,collective/tinymce,FernCreek/tinymce,Zimbra/tinymce,ice8lue/tinymce