function collapseAll(branches, myTree){
if(branches == null){
if(myTree == null){
myTree = dijit.byId('MenuTree');
}
branches = myTree.rootNode.getChildren();
}
var branch;
for(var i = 0; i<branches.length; i+=1){
branch = branches[i];
collapseAll(branch.getChildren(), myTree);
myTree._collapseNode(branch);
}
}
function expandAll(branches,myTree){
if(branches == null){
if(myTree == null){
myTree = dijit.byId('MenuTree');
}
branches = myTree.rootNode.getChildren();
}
var branch;
for(var i = 0; i<branches.length; i+=1){
branch = branches[i];
expandAll(branch.getChildren(), myTree);
myTree._expandNode(branch);
}
}