function allblur() {
  for (i = 0; i < document.links.length; i++) {
    var obj = document.links[i];
    if(obj.addEventListener) obj.addEventListener("focus", oneblur, false);
    else if(obj.attachEvent) obj.attachEvent("onfocus", oneblur);
  }
}
 
function oneblur(e) {
  var evt = e ? e : window.event;
  if(evt.target) evt.target.blur();
  else if(evt.srcElement) evt.srcElement.blur();
}
	
function clickshow(num){
	menu = document.getElementById("block"+num);
	if( menu != null && typeof menu != "undefined" )
		{
			if (menu.style.display=="block"){
			menu.style.display="none"; //´Ý°í
		}
	else{
		menu.style.display="block";//ÇÏÀ§¸Þ´º¸¦ ÆîÄ£´Ù.
		}
	}
}