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_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_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 setPageImage() {
	MM_preloadImages('../image/menu1_1.jpg', '../image/menu2_1.jpg', '../image/menu3_1.jpg', '../image/menu4_1.jpg', '../image/menu5_1.jpg',
		'../image/menu6_1.jpg');
	var outertr = document.getElementById("htr");
	for(var i = 1; i < 7; ++i) {
		var button = outertr.childNodes[i];
		setImage(button, i, parent.pagename);
	}
}

function setAboutImage() {
	MM_preloadImages('../about/image/sub_menu1_1.jpg', '../about/image/sub_menu2_1.jpg', '../about/image/sub_menu3_1.jpg',
		'../about/image/sub_menu4_1.jpg', '../about/image/sub_menu5_1.jpg');
	var container = document.getElementById("container");
	for(var i = 0; i < 5; ++i) {
		var button = container.firstChild.childNodes[i*2].firstChild;
		setImage(button, i, parent.sidename);
	}
}

function setIPImage() {
	MM_preloadImages('../ipcontact/image/sub_menu1_1.jpg','../ipcontact/image/sub_menu2_1.jpg','../ipcontact/image/sub_menu3_1.jpg',
		'../ipcontact/image/sub_menu4_1.jpg','../ipcontact/image/sub_menu6_1.jpg','../ipcontact/image/sub_menu5_1.jpg',
		'../ipcontact/image/sub_menu7_1.jpg');
	var container = document.getElementById("container");
	for(var i = 0; i < 7; ++i) {
		var button = container.firstChild.childNodes[i*2].firstChild;
		setImage(button, i, parent.sidename);
	}
}

function setSecurityImage() {
	MM_preloadImages('../security/image/sub_menu_1_1.jpg','../security/image/sub_menu_2_1.jpg','../security/image/sub_menu_3_1.jpg',
		'../security/image/sub_menu_4_1.jpg','../security/image/sub_menu_5_1.jpg','../security/image/sub_menu_6_1.jpg',
		'../security/image/sub_menu_7_1.jpg','../security/image/sub_menu_8_1.jpg','../security/image/sub_menu_9_1.jpg',
		'../security/image/sub_menu_10_1.jpg','../security/image/sub_menu_11_1.jpg');
	var container = document.getElementById("container");
	for(var i = 0; i < 11; ++i) {
		var button = container.firstChild.childNodes[i*2].firstChild;
		setImage(button, i, parent.sidename);
	}
}

function setWhitepaperImage() {
	MM_preloadImages('http://www.hamamedia.co.kr/image/news2_1.jpg','http://www.hamamedia.co.kr/image/menu4_1.jpg',
		'http://www.hamamedia.co.kr/image/menu3_1.jpg','http://www.hamamedia.co.kr/image/menu2_1.jpg','http://www.hamamedia.co.kr/image/menu1_1.jpg',
		'http://www.hamamedia.co.kr/ipcontact/image/sub_menu1_1.jpg','http://www.hamamedia.co.kr/ipcontact/image/sub_menu2_1.jpg',
		'http://www.hamamedia.co.kr/security/image/sub_menu5_1.jpg');
	var container = document.getElementById("container");
	var title = document.location.href.split(/=/)[1];
	for(var i = 0; i < 2; ++i) {
		var button = container.firstChild.childNodes[i*2].firstChild;
		setImage(button, i, title);
	}
}

function setImage(button, i, pagename) {
	if(button.firstChild.firstChild.id == pagename) {
		var link = button.firstChild.firstChild;
		link.src = link.src.replace(/.jpg/, "_1.jpg");
	}
	else {
		button.firstChild.onmouseout = function() { MM_swapImgRestore(); };
		button.firstChild.onmouseover = function() {
			MM_swapImage(this.firstChild.id, '', this.firstChild.src.replace(/.jpg/, "_1.jpg"), 1);
		};
	}
}