加载图像上的Jquery Animate重叠

I am working on a project in which the navigation does not really changes pages but gets data using services based on which navigation link I click and update data using jquery .html() method, I want to use a loader that shows up on clicking any link and hides the content, when ajax services is successfull i want to remove the loader and show back the content, but somehow the animations are overlapping causing animations to fail, I am working on a project in which the navigati