/* 
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

function randomizeBG() {
    var sphere = document.createElement("img");
    sphere.setAttribute("src", "_images/bg_sphere.png");
    sphere.setAttribute("alt", "sphere");
    sphere.style.position = "absolute";
    sphere.style.top = "-100px";
    sphere.style.right = "200px";
    sphere.style.zIndex = "-1";
    
    var circle = document.createElement("img");
    circle.setAttribute("src", "_images/bg_circle.png");
    circle.setAttribute("alt", "circle");
    circle.style.position = "absolute";
    circle.style.top = "-50px";
    circle.style.right = "150px";
    circle.style.zIndex = "-1";
    
    var halve_circle = document.createElement("img");
    halve_circle.setAttribute("src", "_images/bg_q_circle.png");
    halve_circle.setAttribute("alt", "q_circle");
    halve_circle.style.position = "absolute";
    halve_circle.style.top = "-331px";
    halve_circle.style.left = "-60px";
    halve_circle.style.zIndex = "-1";
    
    document.getElementById("contentWrapper").appendChild(sphere);
    document.getElementById("contentWrapper").appendChild(circle);
    document.getElementById("footer").appendChild(halve_circle);
    
    
}