// JavaScript Document
var backgroundSrcs = new Array("pics/randomimg_1.jpg","pics/randomimg_2.jpg","pics/randomimg_3.jpg","pics/randomimg_4.jpg","pics/randomimg_5.jpg","pics/randomimg_6.jpg")

function randomimage() { 
var bgimage=backgroundSrcs[(Math.round(Math.random()*(backgroundSrcs.length-1)))] 
document.getElementById("randimg").style.backgroundImage = "url('" + bgimage + "')"; 
}