if($otherBlocksOfCode[0]) {# Already created...
# push the file1.js to this array...
push(@otherBlocksOfCode, {-type=>"text/javascript", -src=>"/path/file1.js"});
} else { # No other page created it, so create it now...
my @otherBlocksOfCode;
push(@otherBlocksOfCode, {-type=>"text/javascript", -src=>"/path/file1.js"});
}

print start_html(
...

		-script			=>	[@otherBlocksOfCode, {-type=>"text/javascript", -src => "path/file2.js"}, {-type=>"text/javascript", -src => "$_js_path"}, {-code=> "$jscript"}],
...

##</code><code>##


		@_extraJSCode = ({-type=>"text/javascript", -src=>"http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"},);
# then at the main header, where it is built, I do this:

	if($_extraJSCode[0]) {
		push(@_extraJSCode, {-type=>"text/javascript", -src=>"/path/file1.js"});
	} else {
		@_extraJSCode = ({-type=>"text/javascript", -src=>"/jsfiles/st_utilities.js"});
	}