Patent ID: 7966371

Claim:
A browser based web conferencing method, the method comprising transmitting Hypertext Markup Language (HTML) code to a browser of an attendee computer connected to a network, the HTML code comprising code segments for: transmitting over the network a first screen update request; receiving over the network HTML code identifying a screen update image of a first layer; transmitting over the network a request to receive the screen update image of the first layer; displaying the screen update image of the first layer at the attendee computer; transmitting over the network a second screen update request; receiving over the network HTML code identifying a screen update image of a second layer; transmitting over the network a request to receive the screen update image of the second layer; and receiving and displaying the screen update image of the second layer, wherein: the screen update image of the second layer overlaps at least part of the screen update image of the first layer; the code segment for receiving the HTML code of the first layer comprises a code segment for receiving HTML code identifying a plurality of screen update images of the first layer; and the code segment for transmitting over the network a request to receive the screen update image of the first layer comprises an image-load script executed by the attendee computer in connection with receiving one of the screen update images, wherein the image-load script executes a request-update script to cause the attendee computer to request a screen update image over the network in response to all of the screen update images of the first layer having been displayed at the attendee computer.