Added support for preloading javascript libs ($template->preload_js()). Updated admin theme and Tigra Tree Menu to support this + JS_{HEADER,FOOTER} variables.
(function(){tinymce.create('tinymce.plugins.VisualChars',{init:function(ed,url){var t=this;t.editor=ed;ed.addCommand('mceVisualChars',t._toggleVisualChars,t);ed.addButton('visualchars',{title:'visualchars.desc',cmd:'mceVisualChars'});ed.onBeforeGetContent.add(function(ed,o){if(t.state){t.state=true;t._toggleVisualChars();}});},getInfo:function(){return{longname:'Visual characters',author:'Moxiecode Systems AB',authorurl:'http://tinymce.moxiecode.com',infourl:'http://wiki.moxiecode.com/index.php/TinyMCE:Plugins/visualchars',version:tinymce.majorVersion+"."+tinymce.minorVersion};},_toggleVisualChars:function(){var t=this,ed=t.editor,nl,i,h,d=ed.getDoc(),b=ed.getBody(),nv,s=ed.selection,bo;t.state=!t.state;ed.controlManager.setActive('visualchars',t.state);if(t.state){nl=[];tinymce.walk(b,function(n){if(n.nodeType==3&&n.nodeValue&&n.nodeValue.indexOf('\u00a0')!=-1)nl.push(n);},'childNodes');for(i=0;i<nl.length;i++){nv=nl[i].nodeValue;nv=nv.replace(/(\u00a0+)/g,'<span class="mceItemHidden mceVisualNbsp">$1</span>');nv=nv.replace(/\u00a0/g,'\u00b7');ed.dom.setOuterHTML(nl[i],nv,d);}}else{nl=tinymce.grep(ed.dom.select('span',b),function(n){return ed.dom.hasClass(n,'mceVisualNbsp');});for(i=0;i<nl.length;i++)ed.dom.setOuterHTML(nl[i],nl[i].innerHTML.replace(/(·|\u00b7)/g,' '),d);}}});tinymce.PluginManager.add('visualchars',tinymce.plugins.VisualChars);})();