function votacion()
{

	//select all the a tag with name equal to modal
	$(function() {		
		//Get the A tag
		var id = "#dialog";
	
		//Get the screen height and width
		var maskHeight = $(document).height();
		var maskWidth = $(window).width();
	
		//Set heigth and width to mask to fill up the whole screen
		$('#mask').css({'width':maskWidth,'height':maskHeight});
		
		//transition effect		
		$('#mask').fadeIn(1000);	
		$('#mask').fadeTo('slow',0.8);	
	
		//Get the window height and width
		var winH = $(window).height();
		var winW = $(window).width();
              
		//Set the popup window to center
		$(id).css('top',  winH/2-$(id).height()/2 -10);
		$(id).css('left', winW/2-$(id).width()/2) - 10;
	
		//transition effect
		$(id).fadeIn(2000); 
	
	});	
	
	//if close button is clicked
	$('#close').click(function () {	
		$('#mask').hide();
		$('.window').hide();
	});
	
	//if mask is clicked
	$('#mask').click(function () {
		$(this).hide();
		$('.window').hide();
	});	
}