I need to develop a web application that accepts as input a Web Service Choreography Description Language (WS-CDL) document and check the document for conformance with the WS-CDL specification (WS-CDL is an XML based description language). If there are errors in the document, then it should generate pop-up messages showing the user the type of error and the location on the document, if not it should give a message that the user can proceed to view the result in the form of a transaction tree. The web page to be developed will have four major buttons, the browse button which will allow the user to choose the document from a location on their system, the submit button to send the document, the check button for checking for conformance with the WS-CDL specification and the result button to generate the document in form of a transaction tree. the attached file is a sample WS-CDL file, note that the element tags are pre-defined, you can check on-line for WS-CDL specification. the check button should validate the document against the schema as well as syntactic and semantic rules. Keywords: Javascript, Website, J2EE, XML, Java, Design