WS-Anti spam (ASP) script

How does that functions? Inside the form (page1.asp), set dynamic session variable, different with each visit from the page You post this variable and require that a field text be suitably filled with the value of the posted variable. In the page of treatment (page2.asp), you check that the field of control is not null and that its value is the same that of the dynamic variable. If these conditions are met, then the form is treated. If not, the data are rejected.