function comma(num) { 

	if (num == 0) {
          
          var theValue =  0 ; 
          
	} else {
	
		   var num = num + "";

		   if(num.length >= 4) {
                num  = new String(num) ;
                temp = "" ;
                co = 3 ;
                num_len = num.length ;
       
                while (num_len > 0){ 
                    num_len = num_len - co ;
                    if(num_len<0){co=num_len+co;num_len=0;} 
                    temp = "," + num.substr(num_len,co) + temp ;
	            } 
	   
	            theValue =  temp.substr(1); 
		   } else {
			    theValue = num
		   }
	}
	
	return (theValue); 
} 


// ¼ýÀÚ¸¸ ÀԷ°¡´ÉÇÏ°Ô ÇÏ´Â ÇÔ¼ö
function keyNumber()
{
	
	var keyCode = window.event.keyCode;	
	
	//alert( keyCode );
	
	// 48 ÀÌÇÏ, 57 ÀÌ»óÀº ¼ýÀÚ°¡ ¾Æ´Ñ ¿µ¿ª. 8 : BackSpace, 9 : Tab, 46 : Delete Key, 37 : left arrow, 39 : right arrow
	// 38 : up arrow, 40 : down arrow
	if ( ( keyCode >= 48 ) && ( keyCode <=57 ) || ( keyCode == 8 ) || ( keyCode == 9 ) || ( keyCode == 46 ) || ( keyCode == 37 ) || ( keyCode == 39 ) || ( ( keyCode >= 96 ) && ( keyCode <= 105 )  ) )
	{
		//TEST
		//alert( 'true' );
		window.event.returnValue = true;
	}
	else 
	{
		//alert( 'false' );
		window.event.returnValue = false;
	}
	
	/*  Å°º¸µå ¿ìÃøÀÇ ¹øÈ£ÆÇÀ» »ç¿ëÇÏÁö ¸øÇß´ø ¿¹ÀüÀÇ Source
	if( ( ( keyCode < 48 ) || ( keyCode > 57 ) ) && ( keyCode != 8 ) && ( keyCode != 9 ) && ( keyCode != 46 ) && ( keyCode != 37 ) && ( keyCode != 39 ) )
	{
		window.event.returnValue = false;
	}
	else
	{
		window.event.returnValue = true;
	}
	*/
}