for (var i = 0; i < document.images.length; i++)
                {
                if (document.images[i].name.indexOf("CM4all_") == 0)
                    {
                    eval(document.images[i].name + "_hi = new Image()");

                    eval(document.images[i].name + "_no = new Image()");
                    eval(document.images[i].name + "_an = new Image()");
                    var thenormsrc = document.images[i].src;
                    var fileext = thenormsrc.substring(thenormsrc.length - 4);
                    eval(document.images[i].name + "_hi.src = '" + thenormsrc.substring(0, thenormsrc.length - 6) + "_m"
                                                 + fileext       + "'");
                    eval(document.images[i].name + "_no.src = '" + thenormsrc.substring(0, thenormsrc.length - 6) + "_n"
                                                 + fileext       + "'");
                    eval(document.images[i].name + "_an.src = '" + thenormsrc.substring(0, thenormsrc.length - 6) + "_h"
                                                 + fileext       + "'");
                    }
                }