var stb;

function getCurrentStyle(elem) {
 if (elem) {
  if (elem.currentStyle) {
   return elem.currentStyle;
  } else if (document.defaultView) {
    if (document.defaultView.getComputedStyle) {
     return document.defaultView.getComputedStyle(elem, "");
    }
  }
 }
 return elem.style;
}

function menu_hover(elem){ 
  stb=getCurrentStyle(elem).backgroundImage;
  elem.style.backgroundImage='url(images/menu_line_en.jpg)';
  elem.style.cursor='hand';
}
function menu_hout(elem){
  elem.style.backgroundImage=stb;
}