Random Photo Primary

/******** random foto primary*********/



if (typeof RANDOMIMG == "undefined") { RANDOMIMG = {}; }
RANDOMIMG = {
image: null,
sibling: null,
randimage: [],

init: function() {
var preload = [];
for (var n=0;n<this.randimage.length;n++) {
preload[n] = [];
preload[n].setAttribute("src",""+this.randimage[n]+"");
}
this.randimage[0] = "URL photo 1";
this.randimage[1] = "URL photo 2";
this.randimage[2] = "URL photo 3";
this.randimage[3] = "URL photo 4";




this.image = document.createElement("div");
this.image.className = "randomImage";
var rotateimg = document.createElement("img");
rotateimg.id = "defaultimage";
rotateimg.style.width = "200px";
rotateimg.style.height = "200px";
rotateimg.src = this.randimage[Math.floor(Math.random()*(this.randimage.length))];
this.image.appendChild(rotateimg);
this.sibling = this.getModuleByClassName(/imgblock200/i)[0];


this.sibling.parentNode.replaceChild(this.image,this.sibling);
setInterval("RANDOMIMG.rotateimage()", 2*1000);
},

rotateimage: function() {
var ind = 0;
if (ind == (temp = Math.floor(Math.random()*(this.randimage.length)))) {
ind = (ind == 0) ? 1 : ind - 1;
}else {
ind = temp;
}
document.getElementById("defaultimage").setAttribute("src",""+this.randimage[ind]+"");
},

getModuleByClassName: function(sClass) {
var elm = [];
var els = document.getElementsByTagName("*") || document.all;
for (var j=0,k=els.length;j<k;j++) {
if (new RegExp(sClass).test(els[j].className))elm.push(els[j]);
}
return elm;
}
};RANDOMIMG.init();