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102 Clicking the button below calls the 103 GetPicture method of the 104 105 PictureService web service using the SOAP 1.2 protocol. The web service 106 returns the URL of an image for the page background. SOAP is a special way 107 of using HTTP, in which arguments to the service, and answers from the service, 108 are packaged as special SOAP-defined XML. 109

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111 See the web service's 112 source code. This page can call the web service using Ajax 113 only because both the page and the web service are in 114 domain http://harbormist.com. 115

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