function getCookie( name ) {
	var start = document.cookie.indexOf( name + "=" );
	var len = start + name.length + 1;
	if ( ( !start ) && ( name != document.cookie.substring( 0, name.length ) ) ) {
		return null;
	}
	if ( start == -1 ) return null;
	var end = document.cookie.indexOf( ';', len );
	if ( end == -1 ) end = document.cookie.length;
	return unescape( document.cookie.substring( len, end ) );
}

function setCookie( name, value, expires, path, domain, secure ) {
	var today = new Date();
	today.setTime( today.getTime() );
	if ( expires ) {
		expires = expires * 1000 * 60 * 60 * 24;
	}
	var expires_date = new Date( today.getTime() + (expires) );
	document.cookie = name+'='+escape( value ) +
		( ( expires ) ? ';expires='+expires_date.toGMTString() : '' ) + //expires.toGMTString()
		';path=/'+
		( ( domain ) ? ';domain=' + domain : '' ) +
		( ( secure ) ? ';secure' : '' );
}

function deleteCookie( name, path, domain ) {
	if ( getCookie( name ) ) document.cookie = name + '=' +
			( ( path ) ? ';path=' + path : '') +
			( ( domain ) ? ';domain=' + domain : '' ) +
			';expires=Thu, 01-Jan-1970 00:00:01 GMT';
}

function expandMenu(id)
{
    if(document.getElementById('subCat' + id))
    {
        var tree = getCookie('tree');

        var newTree = new Array();

        if(tree)
        {
            tree = tree.split('-');

            var treeSize = tree.length;


            for(var i = 0; i < treeSize; i++)
            {
                if(tree[i] != id)
                {
                    newTree.push(tree[i]);
                }
            }
        }


        if(document.getElementById('subCat' + id).style.display == 'none')
        {
            document.getElementById('subCat' + id).style.display = 'block';

            newTree.push(id);


        }
        else
        {
            document.getElementById('subCat' + id).style.display = 'none';

        }
        setCookie('tree', newTree.join('-'));
    }

}

function buildMenu()
{
    var tree = getCookie('tree');
    if(tree)
    {
        tree = tree.split('-');
        var treeSize = tree.length;
        for(var i = 0; i < treeSize; i++)
        {

            if(document.getElementById('subCat' + tree[i]))
            {
                document.getElementById('subCat' + tree[i]).style.display = 'block';
            }
        }
    }
    document.getElementById('cats').style.visibility = 'visible';
}