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If you are using our services for the first time, you may want to review the following requirements for your internet browser:

•  Microsoft Internet Explorer or Netscape Navigator browser version 4.x or higher.

•  Enable JavaScript (enabled by default). If you disable JavaScript, the service interface features will not operate properly.  

•  Enable cookies.

•  Install Adobe Acrobat to view page images.

The following instructions will guide you through the steps needed to configure these browser options. If you have questions, refer to your browser's help menu.

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Install Adobe Acrobat Reader.

Some of our services provide article page images in Adobe PDF (Portable Article File) format. To view these articles, you need Adobe Acrobat Reader installed on your system. If you do not have it, you can download Adobe Acrobat Reader for free.

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Enable cookies.

Cookies are a general mechanism that allows the server side of a connection and the client side of the connection (your computer) to maintain information about a particular session. For example, by using cookies, we can keep track of your pending article retrievals and your display and search options for the current session.

Cookies are not used to collect marketing information or for any other purpose other than to make using our products as easy and efficient as possible.

Most browsers provide an option for alerting you when cookies are used. If this option is checked, you will see an alert dialog when using our services. To prevent the alert dialog from displaying every time cookie information is transferred, you should disable this alert mechanism and allow our server to accept cookies. 

If using Netscape Navigator 4.x and higher:

1.  Click Preferences on the Edit menu.

2.  Click the Advanced category.

3.  Clear the check box next to Warn me before accepting a cookie.

4.  Click OK.

If using Microsoft Internet Explorer 4.x:

1. Click Internet Options on the View menu.

2. Click the Advanced tab.  

3. Scroll to the Security section.

4. Deselect Prompt before accepting cookies.

5. Click OK.

If using Microsoft Internet Explorer 5.x and higher:

1. Click Internet Options on the Tools menu.

2. Click the Security tab.

3. Click the Custom Level button.

4. Scroll to the Cookies section.

5. Select Enable under Allow cookies that are stored on your computer.

6. Click OK.

7. Click Apply.

8. Click OK.  

If using Microsoft Internet Explorer 6.x and higher:

1. Click Internet Options on the Tools menu.

2. Click the Privacy tab.

3. Move the slider button to low.

4. Click Apply.

5. Click OK.  

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Understanding cookies

Some Web sites store information in a small text file, called a "cookie," on your hard disk. Cookies contain information about you and your preferences. For example, if you inquire about a flight schedule at an airline's Web site, the site might create a cookie that contains your itinerary. Or it might only contain a record of which pages within the site you visited, to help the site customize the view for you the next time you visit. Only the information that you provide, or the choices you make while visiting a Web site, can be stored in a cookie. For example, the site cannot determine your e-mail name unless you choose to type it. Allowing a Web site to create a cookie does not give that or any other site access to the rest of your computer, and only the site that created the cookie can read it. Internet Explorer is set up to allow the creation of cookies; however, you can specify that you be prompted before a site puts a cookie on your hard disk, so you can choose to allow or disallow the cookie; or you can prevent Internet Explorer from accepting any cookies. You can specify different settings for different security zones. For example, you might want to allow Web sites to create cookies if they are in your Trusted sites or Local intranet zone, prompt you before creating cookies if they are in your Internet zone, and never allow cookies if they are in your Restricted sites zone.

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Understanding security zones

Internet Explorer divides your Internet world into zones, so that you can assign a Web site to a zone with a suitable security level.

You can tell which zone the current Web page is in by looking at the right side of the Internet Explorer status bar. Whenever you attempt to open or download content from the Web, Internet Explorer checks the security settings for that Web site's zone.

There are four different zones:

• Internet zone: By default, this zone contains anything that is not on your computer or an intranet, or assigned to any other zone. The default security level for the Internet zone is Medium.
• Local intranet zone: This zone typically contains any addresses that don't require a proxy server, as defined by the system administrator. These include sites specified on the Connections tab, network paths (such as \\computername\foldername), and local intranet sites (typically addresses that don't contain periods, such as http://internal). You can also add sites to this zone. The default security level for the Local intranet zone is Medium.
• Trusted sites zone: This zone contains sites you trust—sites that you believe you can download or run files from without worrying about damage to your computer or data. You can assign sites to this zone. The default security level for the Trusted sites zone is Low.
• Restricted sites zone: This zone contains sites you don't trust—that is, sites that you're not sure whether you can download or run files from without damage to your computer or data. You can assign sites to this zone. The default security level for the Restricted sites zone is High.

In addition, any files already on your local computer are assumed to be very safe, so minimal security settings are assigned to them. You cannot assign a folder or drive on your computer to a security zone.

If you want, you can change the security level for a zone; for example, you might want to change the security setting for your Local intranet zone to Low. Or, you can customize the settings within a zone from the default settings in Low, Medium Low, Medium, and High.  

To assign a Web site to a security zone

1. On the Tools menu in Internet Explorer, click Internet Options.

2. Click the Security tab.

3. Click a security zone: Local intranet zone, Trusted sites zone, or Restricted sites zone.

4. If you clicked Local intranet, click Advanced.

5. Click Sites, and then type the Internet address for the Web site that you want to add to this zone.  

Note : You cannot add Web sites to the Internet zone, which includes everything that does not belong to any other zone and is not on your local computer.  

  To set a security level for each zone

1.  On the Tools menu in Internet Explorer, click Internet Options.

2. Click the Security tab.

3. Click the zone that you want to set the security level for.

4. Move the slider up for a higher level of security or down for a lower level of security. 

Notes: 

• To specify custom security settings for the selected zone, click the Customize Level button. To set the options for a particular security level back to their original settings, click the Default Level button.

• For Restricted sites, you need to click Custom Level and then click a level in the Reset to list.

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