var updatePeriod = 1500;


var d = new Date();
var w = d.getTime();

function cam_load()
{
	cmd = "cam_update()";
	fm_submit = setTimeout(cmd, updatePeriod);
}

function cam_update()
{
	cam_tag = document.getElementById('cam_img');
	cam_tag.src = "cam_get_image.php?" + w++;
	cam_load();
}