【正文】 is automatically acplished by extracting an identifier for each participant (called op56) from the database and appending it to the query string of the next survey page—for example, The other transmitted variable, nr93, tells Generic HTML Form Processor which page of a multipage survey it is dealing with. With the help of JavaScript, these two variables are extracted from the query string and inserted into the HTML form as 7 hidden variables. Therefore, for each page of a multipage survey except the first, a JavaScript snippet (see the bold print in the source code in Listing 3) needs to be pasted within the form tags. Figure 3 depicts the browser view of the HTML file . Figure 3 Browser view of example HTML form On the third page of our multipage study, , the researcher again needs to paste the JavaScript snippet between the form tags, but inclusion of the hidden variable next_ page is no longer necessary, because is the last page of the survey (see the source code in Listing 4). Figure 4 depicts the browser view of the HTML file . Figure 4 Browser view of example HTML form Again, the script creates a MySQL database called“generic” with results table “generic.” Because now there are three HTML pages, the names and submission time stamps of pages 2 and 3 are recorded as well (see Figure 5). Retrieval of the survey 8 data follows the same procedure described for the onepage case. Figure 5 Sample table with results from a threepage survey For implementing skip patterns in your survey, there are three options. The first method requires only HTML and is illustrated at the following URL: , the skip pattern might be included within the same page of a survey (., by having JavaScript display an additional item or response option if a particular answer has been selected prior to that). For example, if a respondent indicated having had a particular experience, an additional item could e up that would ask the respondent to de scribe this experience in more detail. The third option (and the second requiring JavaScript) would be to display any contingent material on a consecutive page. As an example, look at the source code of the HTML file in Listing 5. This is a modified version of , with the bold text added. If in a participant indicated that she was female, she would be directed to the interposed page instead of directly to the page (not shown here, but you can see this example as well as others in action at ). The same method can also be used for randomization of survey pages. For this purpose, a JavaScript snippet could draw an element of an array at random. The next page displayed would be contingent on the element selected. third mode involves using Generic HTML Form Processor with a onepage HTML questionnaire on an accessible server with PHP and MySQL. First, download Generic HTML Form Processor from onto your server in a suitable directory. To customize the script’s behavior, follow the guidelines in the script. Alter the action attribute in your HTML form to the location of the script on your server—for example, form method= “post” action= “ The first time the HTML form is submitted, the script creates a MySQL database called “generic” with a results table also called “generic.” Data may be retrieved from 9 your MySQL database either by running a SELECT syntax mand or with the help of a graphical administration tool such as MySQL Control Center. Note that for the script to function properly, the researcher needs ALTER, INSERT, SELECT, UPDATE, and CREATE privileges for MySQL. If the researcher wishes to use a public server, he or she might not have some of these privileges, because it is a security hazard to allocate global ALTER privileges to any user (in this case the researcher). There are three ways of dealing with this: (1) The researcher may ask the server administrator to create a minimal MySQL database with one table in it (this should take less than 1 min) and to allocate the relevant privileges only for the single table within this database. There is no security risk involved in that. (2) Since the ALTER privileges are needed only once—namely, to define all possible columns in the MySQL database—the researcher may ask the server admi