function open_new_window( link_class, title, attributes ) {//Open a new window (pop-up)
	$( link_class ).click(
		function() {
			window.open( this.href, title, attributes );
			return false;
		}
	);
}

$(document).ready(//menu function
    function() {
        /*var site_body = $('#content-wrapper');
		var bottom_parts = $('#bottom-parts');
        site_body.css("top", ($(window).height() - site_body.height())/2  + 'px');//center the site body verticaly
		bottom_parts.css("top", ($(window).height() - site_body.height())/2  + 'px');*/

        $('.content-page, .content-page h1').hide();//hide all pages
        $('#products h1, #info h1, #contact h1').show();
        $('#intro-pic').show();//show intro page

        $('#intro-menu').click(
            function() {
                $('.content-page').hide();
                $('#intro-pic').fadeIn();
            }
        );

        $('#info-menu').click(
            function() {
                $('.content-page').hide();
                $('#info').fadeIn();
            }
        );

        $('#products-menu').click(
            function() {
                $('.content-page').hide();
                $('#products').fadeIn();
            }
        );

        $('#glastres-menu, #products-page-glastres').click(
            function() {
                $('.content-page').hide();
                $('#glastres').fadeIn();
            }
        );

        $('#zardinieres-menu, #products-page-zarntinieres').click(
            function() {
                $('.content-page').hide();
                $('#zarntinieres').fadeIn();
            }
        );

        $('#brises-menu, #products-page-vrises').click(
            function() {
                $('.content-page').hide();
                $('#vrises').fadeIn();
            }
        );

        $('#other-menu, #products-page-alla').click(
            function() {
                $('.content-page').hide();
                $('#alla-eidi').fadeIn();
            }
        );

        $('#contact-menu').click(
            function() {
                $('.content-page').hide();
                $('#contact').fadeIn();
            }
        );
    }
);