function set_topicHeaderImage() {
	var img_rnd = new Array ("/IMAGES/home_v2/index_25.jpg", "/IMAGES/home_v2/index_24.jpg", "/IMAGES/home_v2/index_23.jpg", "/IMAGES/home_v2/index_22.jpg", "/IMAGES/home_v2/index_21.jpg", "/IMAGES/home_v2/index_20.jpg", "/IMAGES/home_v2/index_19.jpg", "/IMAGES/home_v2/index_18.jpg", "/IMAGES/home_v2/index_17.jpg", "/IMAGES/home_v2/index_16.jpg", "/IMAGES/home_v2/index_15.jpg", "/IMAGES/home_v2/index_14.jpg") ;
	var i = Math.round(11*Math.random());
	if( document.getElementById('topicHeaderImage') ) { document.getElementById('topicHeaderImage').src =  img_rnd[i] }
}