function onBodyLoad(){
    prettyPrint();
    bindBehaviorsByClass();
}
function bindBehaviorsByClass(){
}
function getElementsByClassName(classname, node, tagName)
{
    if(!node) node = document.getElementsByTagName("body")[0];
    var a = [];
    var re = new RegExp('\\b' + classname + '\\b');
    var els = node.getElementsByTagName(tagName || "*");
    for(var i=0,j=els.length; i<j; i++){
        if(re.test(els[i].className))a.push(els[i]);
    }
    return a;
}