function start()
{
    setFocus();
    resizeThumbnails('thumbnail', 90);
    resizeThumbnails('productImage', 330);
}

function bookmark()
{
    var url   = document.location.href
	var title = document.title + ' - Shopguide.nl'

	if ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4)) {
		// Internet Explorer
		window.external.AddFavorite(url, title);
	} else if (navigator.userAgent.indexOf('Opera') != -1) {
		// Opera
		alert('Druk op Ctrl + T om een bookmark toe te voegen');
	} else if (navigator.appName == "Netscape") {
		// Netscape / Firefox
		window.sidebar.addPanel(title, url, "");
	} else if (document.all && (navigator.userAgent.indexOf('Win') < 0)) {
		// Internet Explorer Mac
		alert('Druk op Command + B om een bookmark toe te voegen');
	} else {
		// Others
		alert('Druk op Ctrl + D om een bookmark toe te voegen');
	}
}

function displayOptions() {
	if (document.getElementById('searchOptionForm').style.display == 'block') {
		document.getElementById('searchOptionForm').style.display = 'none';
	} else {
        document.getElementById('searchOptionForm').style.display = 'block';
    }
}

function resizeThumbnails(className, size)
{
    var images = document.getElementsByTagName('img');

    for (var i = 0; i < images.length; i++)
    {
        var image  = images[i];
        var height = image.clientHeight
        var width  = image.clientWidth;

        if (image.className == className && ((height > size) || (width > size)))
        {
            if(height > width) {
                image.style.height = size + 'px';
                image.style.width  = Math.round(width * (size / height)) + 'px';
            } else {
                image.style.height = Math.round(height * (size / width)) + 'px';
                image.style.width  = size + 'px';
            }
        }

        image.style.visibility = 'visible';
    }
}

function setFocus()
{
    document.searchForm.searchTerm.focus();
}