function MM_changeProp(objId, x, theProp, theValue) { //v9.0
    var obj = null; with (document) {
        if (getElementById)
            obj = getElementById(objId);
    }
    if (obj) {
        if (theValue == true || theValue == false)
            eval("obj.style." + theProp + "=" + theValue);
        else eval("obj.style." + theProp + "='" + theValue + "'");
    }
}