Dynamic integration of web sites

A method for displaying information, comprising:

• providing, from a component server, mark-up language code corresponding to a Web page component comprising a plurality of component pages;
• generating a pointer pointing to the component server, for inclusion of the pointer in host code on a host server, which is separate from the component server, wherein the host code, when read by a browser program running on a client computer, causes the client computer to display a host page;
• receiving at the component server an invocation of the pointer by the client computer when the client computer accesses the host page, the invocation specifying state information with respect to the Web page component;
• and
• in response to the state information specified by the invocation, selecting a component page from among the plurality of the component pages and conveying from the component server to the client computer a portion of the mark-up language code so as to cause the client computer to display the selected component page of the Web page component on the host page.

Apparatus for displaying information, comprising:

• a network interface;
• and
• a component server, which is configured to receive from a client computer, via the network interface, an invocation of a pointer that is included in host code corresponding to a host page on a host server, which is separate from the component server, wherein the host code, when read by a browser program running on the client computer, causes the client computer to display the host page and invoke the pointer,
• wherein the component server is configured, in response to the invocation of the pointer, to convey via the network interface to the client computer a script command for execution by the browser program on the client computer, the script command having mark-up language code corresponding to a Web page component as an argument, such that responsively to the script command, the client computer displays the Web page component on the host page.

Apparatus for displaying information, comprising:

• a network interface;
• and
• a component server, which is configured to receive from a client computer, via the network interface, an invocation of a pointer that is included in host code corresponding to a host page on a host server, which is separate from the component server, wherein the host code, when read by a browser program running on the client computer, causes the client computer to display the host page and invoke the pointer,
• wherein the invocation of the pointer specifies state information with respect to a Web page component provided by the component server, and
• wherein the component server is configured, in response to the state information, specified by the invocation, to select a component page from among a plurality of component pages in a Web page component, and to convey mark-up language code via the network interface to the client computer so as to cause the client computer to display the selected component page of the Web page component on the host page.