if(get_cookie("sound") == 1){ // if a cookie has been set to pause the video

document.write('<p id="soundoff"><a href="#"  id="soundimg" onclick="sound(1);window.location.reload();">Sound</a></p>');

} 

else { // no cookie has been set - so the video plays as normal
document.write('<p id="sound"><a href="#"  id="soundimg" onclick="sound(0);window.location.reload();">Sound</a></p>');
}