if(Ext.layout.BorderLayout && Ext.layout.BorderLayout.SplitRegion){
    Ext.apply(Ext.layout.BorderLayout.SplitRegion.prototype, {
       splitTip            : "拖曳縮放大小.",
       collapsibleSplitTip : "拖曳縮放大小. 滑鼠雙擊隱藏."
    });