AJAX TREE API is an application which generates an html tree by xml data, with ul and li html tags. After loading the xml data, the API will create an html tree, with the configuration of another xml file. This second xml file records the configuration to construct the html tree, with the information needed to transform the xml data into ul and li html tags. Beyond these two files, there are predefined functions which can be used on the configuration file. The html tree is built with javascript code, with html code generated dynamically. This can be a problem to the indexation of Google and others web searchable. To solve this, the html tree can be generated by php code You can see more information in: www.jplpinto.com/apis/tes t/tree/ With this API you can have the data separated from the interface code, without need to know programming languages. However, if you want, you can program your own functions.