jQuery.expr[':'].regex = function(elem, index, match) {
    var matchParams = match[3].split(','),
        validLabels = /^(data|css):/,
        attr = {
            method: matchParams[0].match(validLabels) ? 
                        matchParams[0].split(':')[0] : 'attr',
            property: matchParams.shift().replace(validLabels,'')
        },
        regexFlags = 'ig',
        regex = new RegExp(matchParams.join('').replace(/^\s+|\s+$/g,''), regexFlags);
    return regex.test(jQuery(elem)[attr.method](attr.property));
}
jQuery.fn.center = function () {
        this.css("position","absolute");
        this.css("top", ( $(window).height() - this.height() ) / 2+$(window).scrollTop() + "px");
        this.css("left", ( $(window).width() - this.width() ) / 2+$(window).scrollLeft() + "px");
        return this;
}

$('a:regex(href, mailto:.*)').click(function(e) {
	e.preventDefault();
	var maskHeight = $(document).height();
	var maskWidth = $(window).width();
	$('#mask').css({'width':maskWidth,'height':maskHeight}).fadeTo("normal",0.8);
	$('#window').fadeIn('normal').center();
	mailto = $(this).attr('href');
});
$('#mask').click(function() {
	$('#mask, #window').fadeOut();
});
$('#accept').click(function() {
	$('#mask, #window').fadeOut();
	win = window.open(mailto);
	win.close();
});