var imageFiles_18_5 = new Array();
imageFiles_18_5['0'] = new Array ('_images/18_Mission_Statement__.gif', '_images/18_Mission_Statement__Mouseover.gif');
imageFiles_18_5['1'] = new Array ('_images/18_The_Commitment_of_our_Staff__.gif', '_images/18_The_Commitment_of_our_Staff__Mouseover.gif');
imageFiles_18_5['2'] = new Array ('_images/18_Bequests_and_Donations__.gif', '_images/18_Bequests_and_Donations__Mouseover.gif');
imageFiles_18_5['3'] = new Array ('_images/18_Publications.gif', '_images/18_PublicationsMouseover.gif');

function image_on_18_5 (position) {
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   doc.src = imageFiles_18_5[position][1];
}

function image_off_18_5 (position) {
   var doc = eval("document.image18_5" + position);
   doc.src = imageFiles_18_5[position][0];
}