// centred popup
var win=null;
function NewWindow(mypage,myname,w,h,scroll,pos){
if(pos=="random"){LeftPosition=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;TopPosition=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;}
if(pos=="center"){LeftPosition=(screen.width)?(screen.width-w)/2:100;TopPosition=(screen.height)?(screen.height-h)/2:100;}
else if((pos!="center" && pos!="random") || pos==null){LeftPosition=0;TopPosition=20}
settings='width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no';
win=window.open(mypage,myname,settings);}

function toggle(lineage) {

    // menu item display toggle
    var tags = document.getElementsByTagName('li');    
        for(i=0;i<tags.length;i++) {                
            if(tags[i].id == 'mn_' + lineage) {
                // set / show
                tags[i].className = "dn";            
                document.getElementById('c_'+ tags[i].id +'').className = 'show';
            } else {
                // reset / hide - only those list items with an id
                if(tags[i].id != '') {
                    tags[i].className = "";                
                    document.getElementById('c_'+ tags[i].id +'').className = 'hide';                
                }
            }      
        }
        
   // always hide single content
   document.getElementById('single_content').className = 'hide';

}