function modal_cupom(e) {
	e.preventDefault();
	
	var id = $(this).attr('href');

	if(id==undefined)
		id="#dialog";

	var maskHeight = $(document).height();
	var maskWidth = $(window).width();

	$('#mask').css({'width':maskWidth,'height':maskHeight});

	//$('#mask').fadeIn(1000);	
	$('#mask').fadeTo("fast",0.8);	

	//Get the window height and width
	var winH = $(window).height();
	var winW = $(window).width();
          
	$(id).css('top',  winH/2-$(id).height()/2);
	$(id).css('left', winW/2-$(id).width()/2);

	$(id).fadeIn(1000); 

}

$(document).ready(function() {
	$('a[name=modal]').click(modal_cupom);
	
	$('.window .close').click(function (e) {
		e.preventDefault();
		
		$('#mask').hide();
		$('.window').hide();
	});		
	
	$('#mask').click(function () {
		$(this).hide();
		$('.window').hide();
	});			
	
});