root/trunk/Vanilla/plugins/Vanilla/templates/vanilla+scoring/javascript.mtml @ 1220

/* Ajax Requests *****************************************************************/

<mt:Ignore>
/***
 * Returns a XMLHttpRequest object (for Ajax operations).
 */
</mt:Ignore>
function mtGetXmlHttp() {
    if ( !window.XMLHttpRequest ) {
        window.XMLHttpRequest = function() {
            var types = [
                "Microsoft.XMLHTTP",
                "MSXML2.XMLHTTP.5.0",
                "MSXML2.XMLHTTP.4.0",
                "MSXML2.XMLHTTP.3.0",
                "MSXML2.XMLHTTP"
            ];

            for ( var i = 0; i < types.length; i++ ) {
                try {
                    return new ActiveXObject( types[ i ] );
                } catch( e ) {}
            }

            return undefined;
        };
    }
    if ( window.XMLHttpRequest )
        return new XMLHttpRequest();
}


/* Adding Handlers to window events *****************************************************************/

<mt:Ignore>
/***
 * A utility function for assigning/adding handlers to window events.
 */
</mt:Ignore>
function mtAttachEvent(eventName,func) {
    var onEventName = 'on' + eventName;
    var old = window[onEventName];
    if( typeof old != 'function' )
        window[onEventName] = func;
    else {
        window[onEventName] = function( evt ) {
            old( evt );
            return func( evt );
        };
    }
}

/* DOM Handler *****************************************************************/

if ( !window.DOM )
    DOM = {

        getElement: function( e ) {
            return (typeof e == "string" || typeof e == "number") ? document.getElementById( e ) : e;
        },
    
    
        addEventListener: function( e, en, f, uc ) {
            try {
                if( e.addEventListener )
                    e.addEventListener( en, f, uc );
                else if( e.attachEvent )
                    e.attachEvent( "on" + en, f );
                else
                    e[ "on" + en ] = f;
            } catch( e ) {}
        },

    
        getClassNames: function( e ) {
            if( !e || !e.className )
                return [];
            return e.className.split( /\s+/g );
        },
    
    
        hasClassName: function( e, cn ) {
            e = DOM.getElement( e );
            if( !e || !e.className )
                return false;
            var cs = DOM.getClassNames( e );
            for( var i = 0; i < cs.length; i++ ) {
                if( cs[ i ] == cn )
                    return true;
            }
            return false;
        },
    
    
        addClassName: function( e, cn ) {
            e = DOM.getElement( e );
            if( !e || !cn )
                return false;
            var cs = DOM.getClassNames( e );
            for( var i = 0; i < cs.length; i++ ) {
                if( cs[ i ] == cn )
                    return true;
            }
            cs.push( cn );
            e.className = cs.join( " " );
            return false;
        },
    
    
        removeClassName: function( e, cn ) {
            var r = false;
            e = DOM.getElement( e );
            if( !e || !e.className || !cn )
                return r;
            var cs = (e.className && e.className.length)
                ? e.className.split( /\s+/g )
                : [];
            var ncs = [];
            /* support regex */
            if( cn instanceof RegExp ) {
                for( var i = 0; i < cs.length; i++ ) {
                    if ( cn.test( cs[ i ] ) ) {
                        r = true;
                        continue;
                    }
                    ncs.push( cs[ i ] );
                }
            } else {
                for( var i = 0; i < cs.length; i++ ) {
                    if( cs[ i ] == cn ) {
                        r = true;
                        continue;
                    }
                    ncs.push( cs[ i ] );
                }
            }
            if( r )
                e.className = ncs.join( " " );
            return r;
        },


        getElementsByTagAndClassName: function( tagName, className, root ) {
            root = DOM.getElement( root );
            if( !root )
                root = document;
            var allElements = root.getElementsByTagName( tagName );
            var elements = [];
            for( var i = 0; i < allElements.length; i++ ) {
                var element = allElements[ i ];
                if( !element )
                    continue;
                if( DOM.hasClassName( element, className ) )
                    elements[ elements.length ] = element;
            }
            return elements;
        },


        getElementsByClassName: function( className, root ) {
            return DOM.getElementsByTagAndClassName( "*", className, root );
        }


    };