if (GUILayout.Button(new GUIContent("", btnImage_importpackage, "Import Package..."), GUILayout.Width(32), GUILayout.Height(32)))
{
sPath = EditorUtility.OpenPanel("Import Package...", Application.dataPath, "unitypackage");
if (sPath != "")
{
AsseetDatabase.ImportPackage(sPath, true);
}
}