var rand1 = 1;
//var useRand = 0;

images = new Array;

images[1] = new Image();
images[1].src = "images/header1.jpg";
images[2] = new Image();
images[2].src = "images/header2.jpg";
images[3] = new Image();
images[3].src = "images/header3.jpg";
images[4] = new Image();
images[4].src = "images/header4.jpg";
images[5] = new Image();
images[5].src = "images/header5.jpg";
images[6] = new Image();
images[6].src = "images/header6.jpg";
images[7] = new Image();
images[7].src = "images/header7.jpg";
images[8] = new Image();
images[8].src = "images/header8.jpg";
images[9] = new Image();
images[9].src = "images/header9.jpg";
images[10] = new Image();
images[10].src = "images/header10.jpg";
images[11] = new Image();
images[11].src = "images/header11.jpg";
images[12] = new Image();
images[12].src = "images/header12.jpg";
images[13] = new Image();
images[13].src = "images/header13.jpg";
images[14] = new Image();
images[14].src = "images/header14.jpg";
images[15] = new Image();
images[15].src = "images/header15.jpg";
images[16] = new Image();
images[16].src = "images/header16.jpg";
images[17] = new Image();
images[17].src = "images/header17.jpg";
images[18] = new Image();
images[18].src = "images/header18.jpg";
images[19] = new Image();
images[19].src = "images/header19.jpg";
images[20] = new Image();
images[20].src = "images/header20.jpg";
images[21] = new Image();
images[21].src = "images/header21.jpg";
images[22] = new Image();
images[22].src = "images/header22.jpg";
images[23] = new Image();
images[23].src = "images/header23.jpg";
images[24] = new Image();
images[24].src = "images/header24.jpg";
images[25] = new Image();
images[25].src = "images/header25.jpg";

/*
images[1] = new Image();
images[1].src = "images/headerZafer.jpg";
*/
function rndSelect() {
var imgnum = images.length - 1;
var randnum = Math.random();
rand1 = Math.round((imgnum - 1) * randnum) + 1;
var a = document.getElementById("header-photo");
a.style.background = "#fff url(" + images[rand1].src + ") no-repeat center center";
}

function nxtSelect() {
var imgnum = images.length - 1;
rand1++;
if(rand1>imgnum) rand1=1;
var a = document.getElementById("header-photo");
a.style.background = "#fff url(" + images[rand1].src + ") no-repeat center center";
}