function val_showDesc( linkNode ) {

    var divNode = linkNode.parentNode.parentNode;
    
    if ( divNode.className.indexOf( 'expanded' ) == -1 ) {
        divNode.className = 'val-product val-product-expanded';
    } else {
        divNode.className = 'val-product';
    }
}

function val_showDescAll( expanded ) {

    var divNodes = document.getElementsByTagName( 'div' );

    for ( var iNode in divNodes ) {
        var divNode = divNodes[ iNode ];
        if ( divNode.className ) {
            if ( divNode.className.indexOf( 'val-product' ) != -1 ) {
                if ( divNode.className.indexOf( 'expanded' ) == -1 ) {
                    if ( expanded ) {
                        divNode.className = 'val-product val-product-expanded';
                    }
                } else {
                    if ( ! expanded ) {
                        divNode.className = 'val-product';
                    }
                }
            }
	}
    }
}