var how_many = 4;
var maxm1 = how_many - 1;
//var now = new Date()
//var sec = now.getSeconds()
//var pick = sec % how_many;
//pick +=1;
pick = Math.round(Math.random()*maxm1) + 1;
if (pick==1) {
document.write("<img src=\"images/turbine_blades_vanes_1.jpg\" width=\"150\" height=\"100\" class=\"border_black\" />")
}
if (pick==2) {
document.write("<img src=\"images/turbine_blades_vanes_2.jpg\" width=\"150\" height=\"100\" class=\"border_black\" />")
}
if (pick==3) {
document.write("<img src=\"images/turbine_blades_vanes_3.jpg\" width=\"150\" height=\"100\" class=\"border_black\" />")
}
if (pick==4) {
document.write("<img src=\"images/turbine_blades_vanes_4.jpg\" width=\"150\" height=\"100\" class=\"border_black\" />")
}

//if (pick==1) {
//document.write("<dl><dt><b>&quot; "+
//"TEXT"+
//"&quot;</b></dt><dd><i>"+
//"PERSON"+
//"</i></dd></dl>")
//}