//**********¿£ÅÍÅ°¸¦ ÃÆÀ»¶§ Æ÷½ºÆ®¹é ¹æÁöÇϱâ*****************************************//
function checkCR(evt) 
{
	var evt  = (evt) ? evt : ((event) ? event : null);
	var node = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null);
	if ((evt.keyCode == 13) && (node.type=="text")) {return false;}
}
document.onkeypress = checkCR;

//************************************************************************************//

//**********°Ë»ö½Ã ¿£ÅÍÅ° Àû¿ë********************************************************//
function EnterKeyPress(button)
{
	if (event.keyCode == 13 )
	{
		button.click();
	}
}
//************************************************************************************//		


function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}


function MainMenu_Setting()
{
	var url = document.location.href.toString().toLowerCase();	
	if(url.indexOf("eng/intro") > 0 )
	{
		MM_showHideLayers('menu_0','','hide','menu_1','','show','menu_2','','hide','menu_3','','hide');
	}
	else if(url.indexOf("eng/study") > 0 )
	{
		MM_showHideLayers('menu_0','','hide','menu_1','','hide','menu_2','','show','menu_3','','hide');
	}
	else if(url.indexOf("eng/pds/") > 0 )
	{
		MM_showHideLayers('menu_0','','hide','menu_1','','hide','menu_2','','hide','menu_3','','show');
	}
	else 
	{
		MM_showHideLayers('menu_0','','show','menu_1','','hide','menu_2','','hide','menu_3','','hide');
	}
	
}