function randomImage() {
pic = new Array();
pic[0] = 'images/img_sc_everett1_lg.jpg';
pic[1] = 'images/img_sc_glasssconce3_lg.jpg';
pic[2] = 'images/img_sc_mccormick3_lg.jpg';
pic[3] = 'images/img_sc_mccormick4_lg.jpg';
pic[4] = 'images/img_sc_park2_lg.jpg';
randomNum = Math.floor(Math.random()*pic.length);
newImage = pic[randomNum];
}