function switchTo(selection,querystring) {
	var nextpageID = $('#'+selection + ' option:selected').attr('value');
	if (nextpageID > 0){
		if ((jQuery.browser == 'Internet Explorer')&&(jQuery.browser.version < 6)){
			var mainurl = '/index.php';
		} else {
			var mainurl = '/index.php';
		}
		location.href = mainurl + "?id=" + nextpageID + "&" + querystring;
	}
}