Collection specific macro files go into collect/<collection_name>/macros, and are used instead of the system ones.

The Collection Specific Macros section of the Format view allows you to add/modify macros specifically for the current collection. By default, the text on this page looks like this:

# extra.dm file
# You can add collection specific macros in here
# Lines starting with a '#' are comments.
# Remember to include the package declaration

package Style

# will be applied to all pages 
# add css style lines inside the style tags
_collectionspecificstyle_ {
<style type="text/css">
</style>
}

# add any javascript functions here
_collectionspecificscript_ { 
}

Because they are listed under package Style, _collectionspecificstyle_ and _collectionspecificscript_ will apply to all pages in the collections.

If you would like to have style or script that applies to a specific page in the collection, you can add it under the applicable package:

(Notice all of the package names are lowercase except for Style.)

For example, if you add the following to the bottom of the Collection Specific Macros page:

# will be applied only to the 'about' page
package about

_collectionspecificstyle_  {
_Style:collectionspecificstyle_
<style type="text/css">
body.bgimage \{ background: url("_httpimages_/background_about.jpg") scroll repeat-y left top; \}
</style>
}

# script that will be applied to only the 'about' page
_collectionspecificscript_ { 
_Style:collectionspecificscript_
<!--
alert ("This alert will only appear on the About page!")
//-->
}

the about page of your collection will have a different background than the rest of the pages in the collection, and an alert box will appear when the about page loads (but not for any other pages).

Some important things to notice in the above code:

• _Style:collectionspecificstyle_ on lines 5 refers to the _collectionspecificstyle_ macro in package Style above. Adding it here ensures any style you have set for the collection as a whole is also included on the about page. Similarly, _Style:collectionspecificscript_ on line 13 includes the scripts specified for the whole collection.
• The _httpimages_ macro on line 7 resolves to the Greenstone/web/images folder, which is where background_about.jpg is located.

The packages for the query, preferences, and help pages work exactly the same way.

Before reading this section, be certain you know how Browsing classifier numbering works. package document works the same as the example above, but effects all pages for all of the browsing classifiers and documents in the collection.

If you do want unique style/scripts for specific pages, there are a few different ways to accomplish this, depending on exactly what you want to do. The most straightforward and comprehensive solution is the use of "if" statements to distinguish between pages. For example:

# for browsing classifier and document pages
package document

_collectionspecificstyle_  {
_Style:collectionspecificstyle_ 

<style type="text/css">
_If_("_cgiargcl_" eq "CL1", 
body.bgimage \{ color: pink; \})

_If_("_cgiargcl_" eq "CL3.2",
body.bgimage \{color: grey;\})

_If_(_cgiargd_, 
body \{ color: purple; \}

_If_("_cgiargd_" ne "HASH96b70944cdfe840c1462d4", 
body \{ color: cyan; \}

body \{font-family: cursive ;\}
div.documenttext \{color: green;\})
body.bgimage \{font-size: 200%; background: url("_httpimages_/browse_cltop_.jpg") scroll repeat-y left top; \}
</style>
}

_collectionspecificscript_ { 
_Style:collectionspecificscript_
}

First, it's important to understand what the macros represent:

The example looks very complex, because it is demonstrating several things. Let's take a look at what each section of code is doing.

_If_("_cgiargcl_" eq "CL1", 
body.bgimage \{ color: pink; \})

This sets the font color of the first browsing classifier (CL1) to pink.

_If_("_cgiargcl_" eq "CL3.2",
body.bgimage \{color: grey;\})

This sets the font color of the second hierarchical level/partition of the third browsing classifier to grey.

_If_(_cgiargd_, 
body \{ color: purple; \}

This tests for the existence of the CGI argument d, which only appears in document page URLs. So, this changes the font color to purple for only document pages. Notice that the body tag does not include .bgimage here. the body element for all of the browsing classifier pages (as well as the query, about, etc.) pages has a class attribute value of bgimage. However, the document body element does not.

_If_("_cgiargd_" ne "HASH96b70944cdfe840c1462d4", 
body \{ color: cyan; \}

For the document page of the document with an ex.Identifier of HASH96b70944cdfe840c1462d4, the font color is cyan.

div.documenttext \{color: green;\})
body \{font-family: cursive ;\}
body.bgimage \{font-family: serif;\}
body.bgimage \{font-size: 200%; background: url("_httpimages_/browse_cltop_.jpg") scroll repeat-y left top; \}

The document text on document pages is green (div of class documenttext only appear on document pages). The font on document pages is cursive, and is serif on browsing classifier pages (because the more specific body.bgimage overrides body).

The final line here presents a possible alternative to the use of 'if' statements specifically if you want different background images for each classifier. Because _cltop_ resolves to the top level of the current classifier, the image name here will be different depending on the page you are on. So, you can have documents names browseCL1.jpg, browseCL2.jpg, etc. to correspond to each classifier.