var hideTimer = false;
var dropObj = false;

//-------------------------------------------------------------------------

function dropList() {
  var oTarget = document.getElementById("dvDropList");
  var oDropList = document.getElementById("drop_menu");

	if (oDropList.style.display == "none") {
    oDropList.style.display = "block";
  } else {
    oDropList.style.display = "none";
  }
}

//-------------------------------------------------------------------------

function show_drop() {
  if (!dropObj) {
    dropObj = document.getElementById('drop_menu');
  }
  if (dropObj) {
    clearTimeout(hideTimer);
    dropObj.style.display = 'block';
  }
}

//-------------------------------------------------------------------------

function hide_drop() {
  dropObj = document.getElementById('drop_menu');
  hideTimer = setTimeout(function() {
		dropObj.style.display = "none"
	}, 100);
}