function error(loc,str){

		var val_temp = wrestTrim(loc);
		loc.value=val_temp;

		if(!loc.value){
			alert(str);
			loc.focus();
			return false;
		}
		return true;
	}
	function wrestTrim(fld){ 
        if (fld == null) return "";
		var pattern = /(^\s*)|(\s*$)/g; // \s 공백 문자 
		fld.value = fld.value.replace(pattern, ""); 
		return fld.value; 
	}
	function num_chk(loc,str){
		if(isNaN(loc.value)){
			alert(str);
			loc.value="";
			loc.focus();
			return false;
		}
		return true;
	}
	function openWin(url,id,opt)
	{
		var winOpt = "width=1,height=1"+","+opt;
		window.open(url,id,winOpt);
	}
	function NewWindow(mypage, myname, w, h, scroll) {  //팝업창 뛰우구
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable'
	win = window.open(mypage, myname, winprops)
	if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
	}
	function setCookie( name, value, expiredays ) 
	{ 
		var todayDate = new Date(); 
		todayDate.setDate( todayDate.getDate() + expiredays ); 
		document.cookie = name + "=" + escape( value ) + "; path=/; expires=" + todayDate.toGMTString() + ";" 
	} 
	function getCookie( name ) 
	{ 
		var nameOfCookie = name + "="; 
		var x = 0; 
		while ( x <= document.cookie.length ) 
		{ 
				var y = (x+nameOfCookie.length); 
				if ( document.cookie.substring( x, y ) == nameOfCookie ) { 
						if ( (endOfCookie=document.cookie.indexOf( ";", y )) == -1 ) 
								endOfCookie = document.cookie.length; 
						return unescape( document.cookie.substring( y, endOfCookie ) ); 
				} 
				x = document.cookie.indexOf( " ", x ) + 1; 
				if ( x == 0 ) 
						break; 
		} 
		return ""; 
	}
	function MM_openBrWindow(theURL,winName,features) { //v2.0
		window.open(theURL,winName,features);
	}