var imageFiles_2r_4 = new Array();
imageFiles_2r_4['0'] = new Array ('_images/2r_HOME.gif', '_images/2r_HOMEMouseover.gif');
imageFiles_2r_4['1'] = new Array ('_images/2r_ARTICLES.gif', '_images/2r_ARTICLESMouseover.gif');
imageFiles_2r_4['2'] = new Array ('_images/2r_TV_APPEARANCES.gif', '_images/2r_TV_APPEARANCESMouseover.gif');
imageFiles_2r_4['3'] = new Array ('_images/2r_LECTURES.gif', '_images/2r_LECTURESMouseover.gif');
imageFiles_2r_4['4'] = new Array ('_images/2r_CONFERENCES.gif', '_images/2r_CONFERENCESMouseover.gif');
imageFiles_2r_4['5'] = new Array ('_images/2r_PRESS.gif', '_images/2r_PRESSMouseover.gif');
imageFiles_2r_4['6'] = new Array ('_images/2r_CONTACT_US.gif', '_images/2r_CONTACT_USMouseover.gif');

function image_on_2r_4 (position) {
   var doc = eval("document.image2r_4" + position);
   doc.src = imageFiles_2r_4[position][1];
}

function image_off_2r_4 (position) {
   var doc = eval("document.image2r_4" + position);
   doc.src = imageFiles_2r_4[position][0];
}