Javascript pass parameter to eventListener function whilst in loop

Javascript pass parameter to eventListener function whilst in loop

This code will pass the last value created by the loop the eventListener
function, I need the value at the time the eventListener was created to be
attached.
window.onload = function() {
var el = document.getElementsByClassName('modify');
for (var i = 0; i < el.length; i++) {
var getId=el[i].id.split("_");
document.getElementById("modify_y_"+getId[2]).addEventListener('mouseover',
function() {
document.getElementById("modify_x_"+getId[2]).style.borderBottom =
'#e6665 solid 3px';
}, false);
}
}