var imagenumber = 4 ;
var randomnumber = Math.random() ;
var rand1 = Math.round( (imagenumber-1) * randomnumber) + 1 ;
images = new Array
images[1] = "_1_history_pic.gif"
images[2] = "_2_history_pic.gif"
images[3] = "_3_history_pic.gif"
images[4] = "_4_history_pic.gif"
var image = images[rand1]
document.write('<img src="../images/history/new_history/' + image + '">')