Вот эта функция
<script>
jQuery('.work-item-move').each(function(){
var thisElem = jQuery(this);
var k=1.36;
k = (thisElem.attr('class').indexOf('full-width')!=-1) ? 3 : 1.36;
var getElemWidth = thisElem.width();
var getElemHeight = getElemWidth/k;
var centerX = getElemWidth/2;
var centerY = getElemHeight/2;
thisElem.css({'height' : getElemHeight});
thisElem.mouseenter(function(){
thisElem.on('mousemove', function (e) {
var mouseX = e.pageX - thisElem.offset().left;
var mouseY = e.pageY - thisElem.offset().top;
var mouseDistX = (mouseX / centerX) * 100 - 100;
var mouseDistY = (mouseY / centerY) * 100 - 100;
thisElem.find('img').css({
'left': -(mouseDistX/6.64) - 15 + "%",
'top': -(mouseDistY/6.64) - 15 + "%"
});
});
thisElem.find('a').fadeIn('fast');
}).mouseleave(function(){
thisElem.find('a').fadeOut('fast');
});
});
</script>
