jQuery(document).ready(function() {
function isScrolledTo(elem) {
var docViewTop = jQuery(window).scrollTop(); //num of pixels hidden above current screen
var docViewBottom = docViewTop + jQuery(window).height();
var elemTop = jQuery(elem).offset().top; //num of pixels above the elem
var elemBottom = elemTop + jQuery(elem).height();
return ((elemTop <= docViewTop));
}
var catcher = jQuery('#catcher');
var sticky = jQuery('#sticky');
jQuery(window).scroll(function() {
if(isScrolledTo(sticky)) {
sticky.css('position','fixed');
sticky.css('top','0');
sticky.css('margin-top','0');
}
var stopHeight = catcher.offset().top + catcher.height();
if ( stopHeight > sticky.offset().top) {
sticky.css('position','relative');
sticky.css('top', 'auto');
sticky.css('margin-top','30px');
}
});
});