function _onMouseOverCodeCommentThread(weEvt){
            // only no mouse button clicked
            if(_doesMouseButtonPressed(weEvt)){
                return;
            }

            var welThread = $(weEvt.currentTarget);
            var htBlockInfo = {
                "sPath"       : welThread.data("range-path"),
                "sStartSide"  : welThread.data("range-startside"),
                "nStartLine"  : parseInt(welThread.data("range-startline"), 10),
                "nStartColumn": parseInt(welThread.data("range-startcolumn"), 10),
                "sEndSide"    : welThread.data("range-endside"),
                "nEndLine"    : parseInt(welThread.data("range-endline"), 10),
                "nEndColumn"  : parseInt(welThread.data("range-endcolumn"), 10)
            };
            yobi.CodeCommentBlock.block(htBlockInfo);
        }
On MouseEnter event fired from CodeCommentThread
@param weEvt
@private