function SwitchImage(elID) {
    var currEl = document.getElementById(elID);
    var currSrc = currEl.src;

    if (currEl.src.indexOf("_over.") == -1) {
        var segments = currSrc.split(".p");
        currEl.src = segments[0] + "_over.p" + segments[1];
    }
    else {
        var segments = currSrc.split("_over.");
        currEl.src = segments[0] + "." + segments[1];
    }
    currEl.style.width = "auto";
    currEl.style.height = "auto";
}