add: chc.setZIndex(vIndex); 
context: proto._layoutInternalWidgetsHorizontal = function(vHint){  // "position" will be called if we move a child  // we move the child here, so we don't need to handle this.  if (!isValidString(vHint) || vHint == "position") {    return;  };    var vPane = this.getParent().getPane();  if (!this.isCreated() || !vPane.isCreated()) {    return true;  };    // this could be used for implemented scrolling buttons  // var vFull = this.getComputedBoxWidth();    if (this.getAlignTabsToLeft())  {    var vReset = "setRight";    var vSet = "setLeft";    var vLastLeft = vPane.getComputedBorderLeft();  }  else  {    var vReset = "setLeft";    var vSet = "setRight";    var vLastLeft = vPane.getComputedBorderRight();  };  var ch = this.getChildren();  var chl = ch.length;  var chc;    var vPref;  var vLeft;    for (var i=0; i<chl; i++)  {    chc = ch[i];    if (chc instanceof QxTab && chc.getVisible())    {      vPref = chc.getPreferredWidth();            // wait for all things to load up correclty (means QxTab with images, ...)      if (vPref == null) {        return true;      };            chc[vReset](null);            if (chc.getChecked())      {        vLeft = vLastLeft - this.getActiveTabOverlap();        vLastLeft += vPref - (2 * this.getActiveTabOverlap());      }      else      {        vLeft = vLastLeft;        vLastLeft += vPref;      };            chc[vSet](vLeft);    };  };};
meta: 1005	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1005/8936cceff561975ca95507acce45ab6da4fec282/QxTabBar.js/clean/qooxdoo/source/script/widgets/QxTabBar.js