/* nav.js - Gives a specified nav item the class name "current". ------------------------------------------------------------------------ Usage ------------------------------------------------------------------------ Each nav item must have the prefix "nav_" followed by a unique name: Add the onload function to the body element and reference the unique part of the nav id. ------------------------------------------------------------------------*/ function highlight(navid,subnavid) { if(document.getElementById){ // Highlight the nav item for this page if (navid) { document.getElementById( 'nav_' + navid ).className = 'current'; } if(subnavid){ //highlight subnav if applicable document.getElementById( 'subnav_' + subnavid ).className = 'current'; } return; } } // replaces A element with id "navID" with a strong tag // improves accessibility and ensures that current page nav link // isn't clickable function unclick(navId) { if (!document.getElementById(navId)) return false; var link = document.getElementById(navId); if (!link.getElementsByTagName("A")) return false; //get the first anchor element aTag = link.getElementsByTagName("A")[0]; aTagText = aTag.childNodes[0].nodeValue; var replacementTag = document.createElement("strong"); var replacementTagText = document.createTextNode(aTagText); replacementTag.appendChild(replacementTagText); //swaps the A tag with a strong tag but maintains the a tag text link.replaceChild(replacementTag,aTag); } function highlight_subnav() { // Highlight the right subnav item by comparing the URL with // the href of each elt in the