function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

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];}
}

// Æû°ª üũ 
function valid_value(formvalue) { 
	if(formvalue.value.length < 4 || formvalue.value.length > 12) { 
		alert("ÀԷ°ªÀº 4~12ÀÚ ¿µ¹® ¼ýÀÚÁ¶ÇÕÀ¸·Î ÀÔ·ÂÇØ ÁÖ¼¼¿ä."); 
		formvalue.select();
		formvalue.focus();
		return false;
	}
	return true;
}

// ¿µ¹®,¼ýÀÚÁ¶ÇÕ
function validValue_EN(formvalue){ 
	var retNum=0; retChr=0; 
											
	for(i=0;i<formvalue.value.length;i++) { 
		var code = formvalue.value.charCodeAt(i);
		var chr = formvalue.value.substr(i,1).toUpperCase(); 
											
		code = parseInt(code) ; 
											
		if(chr < '0' || chr > '9') { 
			retNum++;
		} 
											
		if(chr < 'A' || chr > 'Z') { 
			retChr++; 
		} 
	}
										
	if(!retNum || !retChr) { 
		alert("¿µ¹®,¼ýÀÚÁ¶ÇÕÀ¸·Î ÀÔ·ÂÇØ ÁÖ¼¼¿ä."); 
		formvalue.select();
		formvalue.focus();
		return false;
	} 
	return true;
} 

function not_Pass(form_pass,form_pass1)  { 
	if(form_pass.value != form_pass1.value) { 
		alert("ºñ¹Ð¹øÈ£°¡ ÀÏÄ¡ÇÏÁö ¾Ê½À´Ï´Ù."); 
		form_pass1.focus(); 
		return false;
	} else { 
		return true;
	} 
} 

function onlyNumber()  //¼ýÀÚ¸¸À» ±âÀÔ¹Þ°Ô ÇÏ´Â ¹æ¹ý
 {
   		if((event.keyCode<48)||(event.keyCode>57))
     		event.returnValue=false;
}

function popct(url, pname, w, h) {
	var popw = (screen.width - w) / 2; 
	var poph = (screen.height - h) / 2 ; 
	popft = 'height='+h+',width='+w+',top=' +  poph + ',left='+popw+',scrollbars=yes,status=no,resizable=no';
	window.open(url, pname, popft);
}

function popct_no(url, pname, w, h) {
	var popw = (screen.width - w) / 2; 
	var poph = (screen.height - h) / 2 ; 
	popft = 'height='+h+',width='+w+',top=' +  poph + ',left='+popw+',scrollbars=no,status=no,resizable=no';
	window.open(url, pname, popft);
}

function Key_Press()
{
	if(window.event.keyCode ==13)
		checkit();
		return false;
}