var obj = 'wrapNav';
var wrapClss = 'nav';
var swpClss = wrapClss;    
function mouseOut() {
  swpClss = wrapClss;  
  setTimeout(function() {
      swp();
    }, 888);     
}
function mouseOver(overClss) {    
  swpClss = overClss;
  swp();    
} 
function swp() {
  var wrapClss = document.getElementById(obj).className;
  if(wrapClss==swpClss) {
    document.getElementById(obj).className = wrapClss;
  } else {
    document.getElementById(obj).className = swpClss;
  }
}