if (event.offsetX <= 10 && element.treeElement.hasChildren) { 
if (event.offsetX <= element.treeElement.arrowToggleWidth && element.treeElement.hasChildren) { 
TreeElement.treeElementToggled = function(event){    var element = event.currentTarget;    if (!element || !element.treeElement)        return;    if (event.offsetX <= 10 && element.treeElement.hasChildren) {        if (element.treeElement.expanded) {            if (event.altKey)                element.treeElement.collapseRecursively();            else                element.treeElement.collapse();        } else {            if (event.altKey)                element.treeElement.expandRecursively();            else                element.treeElement.expand();        }    }}
1725	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/1725/34bb5fbb62b629039e0ff2acb2c0fb532fa27177/treeoutline.js/buggy/WebCore/page/inspector/treeoutline.js