function hkmo1() {
   scrollBy( -screen.width ,0 )
   switch(document.getElementById('hkmo1').style.display){
   case "block":
    document.getElementById('hkmo1').style.display='none';
    document.getElementById('showhidebtn').src="images/s_show.gif"
    break;
   case "none":
    document.getElementById('hkmo1').style.display='block';
    document.getElementById('showhidebtn').src="images/s_hide.gif"
    break;
   }
}

function hkmo2() {
   scrollBy( -screen.width ,0 )
   switch(document.getElementById('hkmo2').style.display){
   case "block":
    document.getElementById('hkmo2').style.display='none';
    document.getElementById('showhidebtn2').src="images/s_show.gif"
    break;
   case "none":
    document.getElementById('hkmo2').style.display='block';
    document.getElementById('showhidebtn2').src="images/s_hide.gif"
    break;
   }
}