var imageFiles_4h_31 = new Array();
imageFiles_4h_31['0'] = new Array ('_images/4h_Home.gif', '_images/4h_HomeMouseover.gif');
imageFiles_4h_31['1'] = new Array ('_images/4h_About_Us.gif', '_images/4h_About_UsMouseover.gif');
imageFiles_4h_31['2'] = new Array ('_images/4h_Services.gif', '_images/4h_ServicesMouseover.gif');
imageFiles_4h_31['3'] = new Array ('_images/4h_Tight_Qtr_Logging.gif', '_images/4h_Tight_Qtr_LoggingMouseover.gif');
imageFiles_4h_31['4'] = new Array ('_images/4h__Stability_Thinning.gif', '_images/4h__Stability_ThinningMouseover.gif');
imageFiles_4h_31['5'] = new Array ('_images/4h_Crane_Removal.gif', '_images/4h_Crane_RemovalMouseover.gif');
imageFiles_4h_31['6'] = new Array ('_images/4h__Storm_Cleanups.gif', '_images/4h__Storm_CleanupsMouseover.gif');
imageFiles_4h_31['7'] = new Array ('_images/4h_Types_of_Trees.gif', '_images/4h_Types_of_TreesMouseover.gif');
imageFiles_4h_31['8'] = new Array ('_images/4h_FAQ_s.gif', '_images/4h_FAQ_sMouseover.gif');
imageFiles_4h_31['9'] = new Array ('_images/4h_Videos.gif', '_images/4h_VideosMouseover.gif');
imageFiles_4h_31['10'] = new Array ('_images/4h_References.gif', '_images/4h_ReferencesMouseover.gif');
imageFiles_4h_31['11'] = new Array ('_images/4h_Links.gif', '_images/4h_LinksMouseover.gif');
imageFiles_4h_31['12'] = new Array ('_images/4h_Contact_Us.gif', '_images/4h_Contact_UsMouseover.gif');

function image_on_4h_31 (position) {
   var doc = eval("document.image4h_31" + position);
   doc.src = imageFiles_4h_31[position][1];
}

function image_off_4h_31 (position) {
   var doc = eval("document.image4h_31" + position);
   doc.src = imageFiles_4h_31[position][0];
}