function open_catalog_window()
	{
		catalogWin = window.open('/catalogus.php', 'CatalogWindow',
					 'width=500,height=365,status=no,menubar=no,scrolling=no,scrollbars=no' );
        return false;
	}
    
    function open_news_item ( intNewsitemID )
    {
        newsitems = new Array();
        newsitems[1] = ['presafe-levert-aeds-aan-brandweer.html', 800, 430];
        newsitems[2] = ['zuster-luciana-oefent-met-spoed.html', 830, 450];
        newsitems[3] = ['voordeligste-bhv-leverancier.html', 700, 460];
        newsitems[4] = ['mvo.html', 700, 460];
        //newsitems[8] = ['overlevingskans-hartstilstand-schiphol-arena.html', 700, 580];
        
        
        if( ! newsitems[ intNewsitemID ] )
        {
            alert('Kan het opgegeven newsitem niet vinden.');
            return false;
        }
        
        newsWin = window.open('./nieuws/' + newsitems[ intNewsitemID ][0], 'NewsWindow',
                              'width='+ newsitems[ intNewsitemID ][1] + ',height=' + 
                              newsitems[ intNewsitemID ][2] + ',status=no,menubar=no,scrolling=auto,scrollbars=auto,resizable=yes');
        return false;
    }