// http://www.queness.com/post/77/simple-jquery-modal-window-tutorial
// MODAL WINDOWS 
// WIDTH HEIGHT ASSIGNMENT IS DEFAULTED THROUGH CSS
// INLINE SIZE ASSIGNMENT DOABLE THROUGH INLINE STYLESHEET

$(document).ready(function() {	

	//select all the a tag with name equal to modal
	$('a[name=modal]').click(function(e) {
		//Cancel the link behavior
		e.preventDefault();
		
		//Get the A tag
		var id = $(this).attr('href');
	
		//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(5);	
		$('#mask').fadeTo("fast",0.6);	 // was 0.85, the lower the number the lighter the shading
	
		//Get the window height and width
		var winH = $(window).height();
		var winW = $(window).width();
              
		//Set the popup window to center ORIGINAL, BUT CENTER NOT WORKING WHEN YOU SCROLL AT ALL
		// $(id).css('top',  winH/2-$(id).height()/2);
		// $(id).css('left', winW/2-$(id).width()/2);
		
		//Set the popup window to center after a scroll 
		$(id).css('top', (winH/2-$(id).height()) + $(window).scrollTop());
		$(id).css('left', (winW/2-$(id).width()/2) + $(window).scrollLeft());
		
		
	
		//transition effect
		$(id).fadeIn(5); 
	});
	
	//if close button is clicked
	$('.window .close').click(function (e) {
		//Cancel the link behavior
		e.preventDefault();
		
		$('#mask').hide();
		$('.window').hide();
	});		
	
	//if mask is clicked
	$('#mask').click(function () {
		$(this).hide();
		$('.window').hide();
	});			
	
});

function launchWindow(id) {
		//Get the screen height and width
		var maskHeight = $(document).height();
		var maskWidth = $(window).width();
	
		// SHOW THE MASK
		$('#mask').show();
	
		//Set heigth and width to mask to fill up the whole screen
		$('#mask').css({'width':maskWidth,'height':maskHeight});
		
		//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());
		$(id).css('left', winW/2-$(id).width()/2);
}