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| − | /* Any JavaScript here will be loaded for all users on every page load. */
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| − | /* Any JavaScript here will be loaded for all users on every page load. */
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| − | function ddm()
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| − | {
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| − |
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| − | // Variables, change these in case you need to set other class names (mmhide_ for
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| − | // contribute users for example)
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| − | var parentClass='isParent'; //gets applied when the LI has a nested UL
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| − | var activeParentClass='isActive'; //gets applied when the nested UL is visible
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| − | var preventHoverClass='nohover'; //denotes a navigation that should not get any hover effects
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| − | var indicateJSClass='dhtml'; //gets applied to the main navigation when Javascript is available
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| − | var toHideClass='hiddenChild'; //gets applied to hide the nested UL
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| − | var toShowClass='shownChild'; //gets applied to show the nested UL
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| − | var currentClass='current'; //denotes the current active sub element and prevents collapsing
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| − | var d=document.getElementById('nav'); //denotes the navigation element
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| − |
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| − | // if DOM is not available stop right here.
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| − | if(!document.getElementById && !document.createTextNode){return;}
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| − |
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| − | // if the navigation element is available, apply the class denoting DHTML capabilities
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| − | if(d)
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| − | {
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| − | d.className+=d.className==''?indicateJSClass:' '+indicateJSClass;
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| − | var lis,i,firstUL,j,apply;
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| − |
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| − | // loop through all LIs and check which ones have a nested UL
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| − | lis=d.getElementsByTagName('li');
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| − | for(i=0;i<lis.length;i++)
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| − | {
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| − | firstUL=lis[i].getElementsByTagName('ul')[0]
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| − | // if there is a nested UL, deactivate the first nested link and apply the class to show
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| − | // there is a nested list
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| − | if(firstUL)
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| − | {
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| − | lis[i].childNodes[0].onclick=function(){return false;}
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| − | lis[i].className+=lis[i].className==''?parentClass:' '+parentClass;
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| − | // check if there is a "current" element
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| − | apply=true;
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| − | if(new RegExp('\\b'+currentClass+'\\b').test(lis[i].className)){apply=false;}
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| − | if(apply)
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| − | {
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| − | for(j=0;j<firstUL.getElementsByTagName('li').lengt h;j++)
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| − | {
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| − | if(new RegExp('\\b'+currentClass+'\\b').test(firstUL.getE lementsByTagName('li')[j].className)){apply=false;break}
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| − | }
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| − | }
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| − | // if there is no current element, apply the class to hide the nested list
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| − | if(apply)
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| − | {
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| − | firstUL.className+=firstUL.className==''?toHideCla ss:' '+toHideClass;
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| − | // check if there is a class to prevent hover effects and only apply the function
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| − | // onclick if that is the case, otherwise apply it onclick and onhover
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| − | if(new RegExp('\\b'+preventHoverClass+'\\b').test(d.class Name))
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| − | {
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| − | lis[i].onclick=function(){doddm(this);}
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| − | } else {
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| − | lis[i].onclick=function(){doddm(this);}
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| − | lis[i].onmouseover=function(){doddm(this);}
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| − | lis[i].onmouseout=function(){doddm(null);}
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| − | }
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| − | // if there is a current element, define the list as being kept open and apply the
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| − | // classes to show the nested list and define the parent LI as an active one
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| − | } else {
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| − | lis[i].keepopen=1;
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| − | firstUL.className+=firstUL.className==''?toShowCla ss:' '+toShowClass;
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| − | lis[i].className=lis[i].className.replace(parentClass,activeParentClass);
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| − | }
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| − | }
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| − | }
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| − | }
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| − | // function to show and hide the nested lists and add the classes to the parent LIs
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| − | function doddm(o)
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| − | {
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| − | var childUL,isobj,swap;
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| − |
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| − | // loop through all LIs of the navigation
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| − | lis=d.getElementsByTagName('li');
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| − | for(i=0;i<lis.length;i++)
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| − | {
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| − | isobj=lis[i]==o;
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| − | // function to exchange class names in an object
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| − | swap=function(tmpobj,tmporg,tmprep)
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| − | {
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| − | tmpobj.className=tmpobj.className.replace(tmporg,t mprep)
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| − | }
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| − | // if the current LI does not have an indicator to be kept visible
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| − | if(!lis[i].keepopen)
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| − | {
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| − | childUL=lis[i].getElementsByTagName('ul')[0];
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| − | // check if there is a nested UL and if the current LI is not the one clicked on
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| − | // and exchange the classes accordingly (ie. hide all other nested lists and
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| − | // make the LIs parent rather than active.
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| − | if(childUL)
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| − | {
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| − | if(new RegExp('\\b'+preventHoverClass+'\\b').test(d.class Name))
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| − | {
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| − | if(new RegExp('\\b'+activeParentClass+'\\b').test(lis[i].className))
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| − | {
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| − | swap(childUL,isobj?toShowClass:toHideClass,isobj?t oHideClass:toShowClass);
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| − | swap(lis[i],isobj?activeParentClass:parentClass,isobj?parentC lass:activeParentClass);
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| − | } else {
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| − |
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| − | swap(childUL,isobj?toHideClass:toShowClass,isobj?t oShowClass:toHideClass);
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| − | swap(lis[i],isobj?parentClass:activeParentClass,isobj?activeP arentClass:parentClass);
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| − | }
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| − | } else {
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| − | swap(childUL,isobj?toHideClass:toShowClass,isobj?t oShowClass:toHideClass);
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| − | swap(lis[i],isobj?parentClass:activeParentClass,isobj?activeP arentClass:parentClass);
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| − | }
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| − | }
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| − | }
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| − | }
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| − | }
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| − | }
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| − | window.onload=function()
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| − | {
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| − | ddm();
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| − | // add other functions to be called onload below
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| − | }
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