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 txtMsg_onkeyup(ta_name, s) {
	var target_ta = eval("sForm." + ta_name);
	if ( !ChkByte( ta_name, 1, s+1 ) ) {
		//event.returnValue = false;

		nets_CutString( ta_name, target_ta.value, s );
		target_ta.focus();
		return false;
	}
	return true;
}

function ChkByte(tn, minbyte, maxbyte) {
	var tmpStr;
	var temp = 0;
	var onechar;
	var tcount;
	var field = eval("sForm." + tn);
	var ih = eval("sForm.byte1");
	tcount = 0;

	tmpStr = new String(field.value);
	temp = tmpStr.length;

	for (k=0;k<temp;k++) {
		onechar = tmpStr.charAt(k);
		if (escape(onechar).length > 4) {
			tcount += 2;
		} else if (onechar!='\r') {
			tcount++;
		}
	}

	ih.value = tcount;

	maxbyte--;

	if (tcount>maxbyte) {
		if( tcount > maxbyte ) {
			reserve = tcount - maxbyte;
			alert((maxbyte) + "Byte ÀÌÇÏ·Î ÀÛ¼ºÇØÁÖ¼¼¿ä."); 
		}
		field.focus();
		return false;
	} else
		return true;
}

function nets_CutString(ta_name, aquery, max) {
	var tmpStr;
	var temp = 0;
	var onechar;
	var tcount;
	var target_ta = eval("sForm." + ta_name);
	tcount = 0;

	tmpStr = new String(aquery);
	temp = tmpStr.length;

	for(k=0;k<temp;k++) {
		onechar = tmpStr.charAt(k);

		if(escape(onechar).length > 4) {
			tcount += 2;
		} else if(onechar!='\r') {
			tcount++;
		}

		if(tcount>max) {
			tmpStr = tmpStr.substring(0,k);			
			break;
		}
	}
	
	max_chk = 80;

 	if(max == max_chk) {
		target_ta.value = tmpStr;
	}
		return tmpStr;
}