$(document).ready(function() {	

	//select all the a tag with name equal to modal
	$('a[name=modal]').click(function(e) {
	    e.preventDefault();
		launchWindow('#changePrefForm');
	});
	
	//select all the a tag with name equal to modal
	$('a[name=modalNews]').click(function(e) {
		e.preventDefault();
		launchWindow('#newsletterSignupForm');
	});
	
	//if close button is clicked
	$('.modalWindow #modalClose').click(function (e) {
		//Cancel the link behavior
		e.preventDefault();
		$('#modalMask, .modalWindow').hide();
		//window.location.reload();
	});		
	
	//if mask is clicked
	$('#modalMask').click(function () {
		$(this).hide();
		$('.modalWindow').hide();
		//window.location.reload();
	});			
	
	
	function launchWindow(id) {

		//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
		$('#modalMask').css({'width':maskWidth,'height':maskHeight});
		
		//transition effect		
		$('#modalMask').fadeIn(1000);	
		$('#modalMask').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);
		$(id).css('left', (winW/2)-$(id).width()/2);
	
		//transition effect
		$(id).fadeIn(2000); 
		
	}

});