function getObject(objectId) {
    if(document.getElementById && document.getElementById(objectId)) {
    // W3C DOM
    return document.getElementById(objectId);
    } else if (document.all && document.all(objectId)) {
    // MSIE 4 DOM
    return document.all(objectId);
    } else if (document.layers && document.layers[objectId]) {
    // NN 4 DOM.. note: this won't find nested layers
    return document.layers[objectId];
    } else {
    return false;
    }
}

function displaylist(){    
          var h = getObject('themebox').offsetHeight; 
          var max_h = 500; 
          
          var anim = function(){            
                    h += 50; 
                    if(h >= max_h){ 
                    getObject('themebox').style.height = "500"; 
                    getObject('themes').style.backgroundImage="url(close.gif)";            
                    if(tt){window.clearInterval(tt);} 
                    }
                    else{ 
                getObject('themebox').style.display="block"; 
                getObject('themebox').style.height = h + "px"; 
                    }
            }
               
              var tt = window.setInterval(anim,2);      
}

function hiddenlist(){
       var h = getObject('themebox').offsetHeight; 
           var anim = function(){
                 h -= 50; 
                 
                 if(h <= 5){
                 getObject('themebox').style.display="none"; 
                   getObject('themes').style.backgroundImage="url(open.gif)"; 
                   if(tt){window.clearInterval(tt);}
               }
               else{
                   getObject('themebox').style.height = h + "px"; 
               }
           }
             
           var tt = window.setInterval(anim,2); 
}

//=======================================================
function showClasslist(){
   if(getObject('themebox').style.display == "none"){ 
       displaylist(); 
   }
   else{ 
         hiddenlist(); 
     }
}

function tabit(btn){
	var idname = new String(btn.id);
	var s = idname.indexOf("_");
	var e = idname.lastIndexOf("_")+1;
	var tabName = idname.substr(0, s);
	var id = parseInt(idname.substr(e, 1));
	var tabNumber = btn.parentNode.childNodes.length;
	for(i=0;i<tabNumber;i++){
			document.getElementById(tabName+"_div_"+i).style.display = "none";
			document.getElementById(tabName+"_btn_"+i).className = "";
		};
		document.getElementById(tabName+"_div_"+id).style.display = "block";
		btn.className = "curr";
};

function bookmark(){
var title=document.title
var url=document.location.href
if (window.sidebar) window.sidebar.addPanel(title, url,"");
else if( window.opera && window.print ){
var mbm = document.createElement('a');
mbm.setattribute('rel','sidebar');
mbm.setattribute('href',url);
mbm.setattribute('title',title);
mbm.click();}
else if( document.all ) window.external.addFavorite( url, title);
}