function setEvent () {
    if(!document.getElementsByTagName) return;
    var elms = document.getElementsByTagName("INPUT");
    for(i = 0; i < elms.length; i++) {
        elms[i].onfocus = focusInput;
        elms[i].onblur  = blurInput;
    }
    elms = document.getElementsByTagName("TEXTAREA");
    for(i = 0; i < elms.length; i++) {
        elms[i].onfocus = focusInput;
        elms[i].onblur  = blurInput;
    }
}
function focusInput (e) {
    var obj;
    if(window.event) obj = window.event.srcElement;
    else if(e) obj = e.currentTarget;
    obj.style.backgroundColor = "#FFE7D7";
}
function blurInput (e) {
    var obj;
    if(window.event) obj = window.event.srcElement;
    else if(e) obj = e.currentTarget;
    obj.style.backgroundColor = "white";
}