Convert href links to l33t speak on hover

leetspeak.js

function Leetspeak() {
    var href_array = document.getElementsByTagName("a");

    for (let index = 0; index < href_array.length; index++) {

        var orginial = "";

        href_array[index].onmouseover = function(link){
            orginial = link.target.text;
            link.target.text = link.target.text
            .replace(/s/gi, "5")
            .replace(/e/gi, "3")
            .replace(/l/gi, "1")
            .replace(/i/gi, "1")
            .replace(/t/gi, "7")
            .replace(/a/gi, "4")
            .replace(/o/gi, "0")
            .replace(/\+/gi, "-");

        }

        href_array[index].onmouseout = function(link){
            link.target.text = orginial;
        }
    }
}