Masonary Image load problem

Masonary Image load problem

I load the masonary in my page. but loads only after All images Load. Images load Down Down. Once all Images loaded the masonry Works
my page is contained of 200+ images

please help me


$(window).load(function() {
$('#mainmason').masonry({
 itemSelector: '.rows',
 isFitWidth: true,
 isResizable:true

});
});