// JScript File

function swap(obj, s, r) {
    obj.ori = obj.src;
    obj.hov = obj.src.replace(s,r);
    obj.src = this.hov;
    
    obj.onmouseover = function (e) {
        this.src = this.hov;
    }
    
    obj.onmouseout = function (e) { 
        this.src = this.ori;
    }
}