var imageFiles_1z7_1 = new Array();
imageFiles_1z7_1['0'] = new Array ('_images/1z7_Ross_Wordhouse.gif', '_images/1z7_Ross_WordhouseMouseover.gif');

function image_on_1z7_1 (position) {
   var doc = eval("document.image1z7_1" + position);
   doc.src = imageFiles_1z7_1[position][1];
}

function image_off_1z7_1 (position) {
   var doc = eval("document.image1z7_1" + position);
   doc.src = imageFiles_1z7_1[position][0];
}