<input class='result' value='' />var result;
document.addEventListener('mousemove', function (event) {
result = result || document.querySelector('.result');
result.value = event.clientX + ':' + event.clientY;
}, false);$(document.body).on('load', function () {
// тут
});.class_1 {...}
.class_2 {...}
.class_3 {...}
.class_4 {...}
...
.class_N {...}