function swapLayer(calledFrom) {
 key = document.form1.menu.options[document.form1.menu.selectedIndex].value;
 writeSectionContent(key,calledFrom);
}


function writeSectionContent(section_id,calledFrom) {
	var content, contentTop;
	
	// top of search help table
  tableTop = '<table border="0" cellspacing="0" cellpadding="2" width="400" summary="search help">';
	tableTop += '<tr>';
  tableTop += '<td class="help">';
	tableTop += '<br>';
	
	// bottom of search help table
	tableBottom = '</td>';
	tableBottom += '</tr>';
	tableBottom += '</table>';			  

	switch (section_id) {

	case 'keyword':
		content = tableTop + '<p>Keyword Search Help:</p>';
	  content += '<blockquote>A KEYWORD search will seek words in titles, authors, subjects, notes, etc. '; 
		content += 'Use quotations to search exact phrases. ';
		content += 'Boolean OR and NOT can be used to expand and narrow search results. ';
		content += 'Use an asterisk (*) to search word variations.</blockquote>';
	  content += '<p>Examples:</p>';
	  content += '<ul>';
		content += '<li> &quot;National Forests&quot; </li>';
	  content += '<li> Mexico not new </li>';
	  content += '<li> comput* </li>';
	  content += '<li> (gold or silver) peru* </li>';
	  content += '<li> projection or forecast </li>';
		content += '</ul>';
		content += tableBottom
		break;

	case 'author':
    content =  tableTop +'<p>Author Search Help:</p>';
		content += '<blockquote>Type the name of a person, organization, musical group, etc. </blockquote>';
		content += '<p>Examples:</p>';
		content += '<ul>';
		content += '<li>Persons (last name first) </li>';
		content += '<ul>';
		content += '<li>Twain, Mark </li>';
		content += '<li>Twain </li>';
		content += '</ul>';
		content += '<li>Organizations</li>';
		content += '<ul>';
		content += '<li>Qualcomm <br>';
    content += '<li>California State University, San Marcos </li>';
		content += '</ul>';
		content += '<li>Musical group</li>';
    content += '<ul>';
		content += '<li>Beatles</li>';
		content += '</ul>';
		content += '</ul>';
		content += tableBottom
		break;
		
	case 'title':
		content =  tableTop + 'Browse Alphabetically:<br>';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=a">A</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=b">B</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=c">C</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=d">D</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=e">E</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=f">F</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=g">G</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=h">H</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=i">I</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=j">J</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=k">K</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=l">L</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=m">M</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=n">N</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=o">O</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=p">P</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=q">Q</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=r">R</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=s">S</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=t">T</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=u">U</a> '; 
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=v">V</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=w">W</a> '; 
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=x">X</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=y">Y</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/s?SEARCH=z">Z</a> ';
	
		content += '<p>Journal & Newspaper Title Search Help:</p>';
		content += '<blockquote>Type as much or as little of the JOURNAL or NEWSPAPER TITLE as you want.'; 
		content += 'Do not type initial articles for best results. If exact title is unknown, try a WORD search</blockquote>';
		
		content += '<p>Examples:</p>';
		content += '<ul>';
		content += '<li>JAMA</li>';
		content += '<li>Journal of the American</li>';
		content += '</ul>';
		content += tableBottom;
		break;
		
	case 'subject':
		content =  tableTop + '<p>Subject Heading Search Help:</p>';
	  content += '<blockquote>Type as much or as little of the SUBJECT as you want</blockquote>';
	  content += '<p>Examples:</p>';
	  content += '<ul>';
		content += '<li>Sports medicine </li>';
	  content += '<li>Sports </li>';
		content += '</ul>';
		content += tableBottom;
		break;
	
		
	case 'formGenre':
		content =  tableTop + 'Browse Alphabetically:<br>';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=a">A</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=b">B</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=c">C</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=d">D</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=e">E</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=f">F</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=g">G</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=h">H</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=i">I</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=j">J</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=k">K</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=l">L</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=m">M</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=n">N</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=o">O</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=p">P</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=q">Q</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=r">R</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=s">S</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=t">T</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=u">U</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=v">V</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=w">W</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=x">X</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=y">Y</a> ';
		content += '<a href="http://pac.csusm.edu/search~S3/j?SEARCH=z">Z</a> ';
		content += '<p>Form / Genre Search help:</p>';
	  content += '<blockquote>Genre and Form categorize what something is, while Subject ';
		content += 'categorizes what something is about. Type as much or as little of the ';
		content += 'GENRE or FORM as you want. If you are not sure of the form or genre heading, ';
		content += 'try a SUBJECT search.</blockquote>';
	  content += '<p>Examples:</p>';
	  content += '<ul>';
		content += '  <li> Electronic journals  </li>';
	  content += '  <li> Foreign language films  </li>';
	  content += '  <li> Newspapers  </li>';
		content += '</ul>';
		content += tableBottom;
		break;

	case 'callNumber':
		
		content = '<table border="0" cellspacing="0" cellpadding="2" width="400">';
  	content += '<tr>';
    content += '<td class="help">';
  	content += '<table border="0" cellspacing="0" cellpadding="2">';		
  	content += '<tr>';
    content += '<td class="search" align="right">&nbsp;</td>';
    content += '<td class="search">';
    content += '<input type="hidden" name="ClassScheme" value="LC">';
   	content += '</td>';
		content += '<td>&nbsp;  </td>';
		content += '<td>&nbsp;  </td>';
    content += '</tr>';
    content += '</table>';
		content += '<p>Call Number Search Help</p>';
	  content += '<blockquote>Type as much of the number as you know</blockquote>';
		content += 'Examples:';
		content += '<blockquote>';
	 	content += 'Library of Congress: N 5200 J2<br>';
		content += 'Dewey: 402.175<br>';
		content += 'Government Doc: C 3.245 <br>';
		content += '</blockquote>';	
		content += tableBottom;
		break;
		
	case 'otherNumber':
		content =  tableTop + '<p>ISSN / ISBN Search Help:</p>';
	  content += '<blockquote>Type as much or as little of the ISBN / ISSN Number as you want.</blockquote>';
	  content += '<p>Examples:</p>';
	  content += '<ul>';
		content += '  <li> 1234-5678 </li>';
		content += '	<li> 12345678 </li>';
	  content += '  <li> 012-56789-123 </li>';
	  content += '  <li> 012-5678 </li>';
		content += '</ul>';
		content += tableBottom;
		break;
		
	default:
		break;
	}
	writeDiv(content);
  return true;
}