function get_random_num(num_elements){
	// number from 1 . . . (num_elements)
	var i = Math.round((num_elements-1)*Math.random()) + 1;
	if (i < 10){
		i= '0' + i;
	}
	return i;
}

function get_topright_img(){
	document.write('<img src="images/rt_col_' + get_random_num(1) + '.jpg" alt="right column image" width="242" height="50" id="rightcol_topimg"/></a>');
}
function get_infocus_img(){
	document.write('<img src="images/infocus_' + get_random_num(15) + '.jpg" id="In focus image" width="222" height="374" alt="left column image" /></a>');
}
function get_midcol_img(){
	document.write('<a href="images.htm" title="image"><img src="www/eastasian/images/mid_col_' + get_random_num(7) + '.jpg" id="midcol_img" alt="middle column image" width="436" height="80" style="border:0; padding:0;" /></a>');
}