var pic = new Array();
pic[0] = new Image();
pic[1] = new Image();
pic[2] = new Image();
pic[3] = new Image();
pic[4] = new Image();
pic[5] = new Image();
pic[6] = new Image();

pic[7] = new Image();
pic[8] = new Image();
pic[9] = new Image();

pic[0].src = "images/illust_campus.gif";
pic[1].src = "images/illust_campus_gym.gif";
pic[2].src = "images/illust_campus_library.gif";
pic[3].src = "images/illust_campus_kariyon.gif";
pic[4].src = "images/illust_campus_hall.gif";
pic[5].src = "images/illust_campus_computer.gif";
pic[6].src = "images/illust_campus_shall.gif";

pic[7].src = "images/illust_ground.gif";
pic[8].src = "images/illust_ground_tennis.gif";
pic[9].src = "images/illust_ground_softball.gif";


function setRollOverImg(index, obj){
obj.src = pic[index].src;
}