var diaporama_imgs = false;
var is_change_page = true;

function change_page (newpage_str) {
    var newpage = parseInt(newpage_str, 10);
    if (newpage >= 1 && newpage <= page_max && newpage != page)
	document.location = url_base_page+'-page'+newpage+'.html';
}

function init_change_page() {
    $('input#change_page1').click(function (e) {
	change_page($('input#change_page_val1').val());
    });
    $('input#change_page2').click(function (e) {
	change_page($('input#change_page_val2').val());
    });
    $('input#change_page_val1, input#change_page_val2').keydown(function (e) {
	if (e.keyCode == '13')
	    change_page($(this).val())
    });
}