function init(){
document.getElementById("sub_menu5").className='menu_div2';
}
  
  if (parseInt(navigator.appVersion)>3) {
    if(window.innerHeight){
      winH = window.innerHeight;
    }else if(document.body.offsetHeight){
      winH = document.body.offsetHeight;
    }
  }
document.getElementById("main_background").style.height = (winH-1)+"px";
function show(id) {   
  document.getElementById(id).style.display = 'block'; 
  obj = document.getElementById(id+"_img");
  var curleft = curtop = 0;
	if (obj.offsetParent) {
		curleft = obj.offsetLeft
		curtop = obj.offsetTop
		while (obj = obj.offsetParent) {
			curleft += obj.offsetLeft
			curtop += obj.offsetTop
		}
	}
  document.getElementById(id+"_2").style.top = (curtop+27) + 'px';
  document.getElementById(id+"_2").style.left = curleft + 'px';
  document.getElementById(id+"_2").style.width = document.getElementById(id).offsetWidth + 'px';
  document.getElementById(id+"_2").style.height = (document.getElementById(id).offsetHeight+2) + 'px';
  document.getElementById(id+"_2").style.display = 'block';
  document.getElementById(id+"_2").style.opacity = 0;
	document.getElementById(id+"_2").style.filter = "alpha(opacity=0)";
}
function hide(id) {        
  document.getElementById(id+"_2").style.top = '0px';
  document.getElementById(id+"_2").style.left = '0px';
  document.getElementById(id+"_2").style.width = '0px';
  document.getElementById(id+"_2").style.height = '0px';
  document.getElementById(id+"_2").style.display = 'none';
    document.getElementById(id).style.display = 'none';
}