function randomImage() {
pic = new Array();

pic[0] = 'index_pic_1.jpg';
pic[1] = 'index_pic_2.jpg';
pic[2] = 'index_pic_3.jpg';
pic[3] = 'index_pic_4.jpg';
pic[4] = 'index_pic_5.jpg';
pic[5] = 'index_pic_6.jpg';
pic[6] = 'index_pic_7.jpg';
pic[7] = 'index_pic_8.jpg';
pic[8] = 'index_pic_9.jpg';

randomNum = Math.floor(Math.random()*pic.length);
theImage = pic[randomNum];
return theImage;
}