// initialize image arrays
var f2 = new Array('nw1s','n1s','ne1s'); //north
var f3 = new Array('ne1s','e1s','se1s'); //east
var f4 = new Array('sw1s','s1s','se1s'); //south
var f5 = new Array('sw1s','w1s','nw1s'); //west

// set off img urls
n1s = "http://art.digitalcity.com/mapquest/n1s";
e1s = "http://art.digitalcity.com/mapquest/e1s";
w1s = "http://art.digitalcity.com/mapquest/w1s";
s1s = "http://art.digitalcity.com/mapquest/s1s";
nw1s = "http://art.digitalcity.com/mapquest/nw1s";
sw1s = "http://art.digitalcity.com/mapquest/sw1s";
ne1s = "http://art.digitalcity.com/mapquest/ne1s";
se1s = "http://art.digitalcity.com/mapquest/se1s";

// preload mouseover images
nw1s_f2 = new Image();
nw1s_f2.src = "http://art.digitalcity.com/mapquest/nw1s_f2";
n1s_f2 = new Image();
n1s_f2.src = "http://art.digitalcity.com/mapquest/n1s_f2";
ne1s_f2 = new Image();
ne1s_f2.src = "http://art.digitalcity.com/mapquest/ne1s_f2";
sw1s_f5 = new Image();
sw1s_f5.src = "http://art.digitalcity.com/mapquest/sw1s_f5";
w1s_f5 = new Image();
w1s_f5.src = "http://art.digitalcity.com/mapquest/w1s_f5";
nw1s_f5 = new Image();
nw1s_f5.src = "http://art.digitalcity.com/mapquest/nw1s_f5";
ne1s_f3 = new Image();
ne1s_f3.src = "http://art.digitalcity.com/mapquest/ne1s_f3";
e1s_f3 = new Image();
e1s_f3.src = "http://art.digitalcity.com/mapquest/e1s_f3";
se1s_f3 = new Image();
se1s_f3.src = "http://art.digitalcity.com/mapquest/se1s_f3";
s1s_f4 = new Image();
s1s_f4.src = "http://art.digitalcity.com/mapquest/s1s_f4"; 
se1s_f4 = new Image();
se1s_f4.src = "http://art.digitalcity.com/mapquest/se1s_f4";
sw1s_f4 = new Image();
sw1s_f4.src = "http://art.digitalcity.com/mapquest/sw1s_f4";

notcha = new Image();
notcha.src = "http://art.digitalcity.com/mapquest/notcha";
notchb = new Image();
notchb.src = "http://art.digitalcity.com/mapquest/notchb";

function panOver(arr) {
    for (i = 0; i < 3; i++) {
        var img = eval(arr)[i];
        document[img].src = eval(img + '_' + arr + '.src');
    }
}

function panOff(arr) {
    for (i = 0; i < 3; i++) {
        var img = eval(arr)[i];
        document[img].src = eval(img); 
    }
}

function swap(objName, imgName) {
    document[objName].src = eval(imgName + '.src');
}