/* ¼ýÀÚ+¾ËÆĺª °Ë»ç */
function alphanum_check (alphanum){

	var pattern = /^[0-9a-zA-Z]*$/;

	if (pattern.test(alphanum.value)){
		return true;
	}else{
		return false;
	}
}

/* ¾ËÆĺª °Ë»ç */
function alpha_check (alpha){

	var pattern =/^[A-Za-z]*$/;
	
	if (pattern.test(alpha.value)){
		return true;
	}else{
		return false;
	}
}

/* ¼ýÀÚ °Ë»ç */
function number_check (number){

	var pattern =/^[0-9]*$/;

	if (pattern.test(number.value)){
		return true;
	}else{
		return false;
	}
}

/* ÇÑ±Û °Ë»ç */
function han_check (han){

	var pattern =/^[°¡-ÆR]*$/;

	if (pattern.test(han.value)){
		return true;
	}else{
		return false;
	}
}

/* ¼ýÀÚ ÇÊµå °Ë»ç */
function number_only(){
	
	if( !( event.keyCode>=48 && event.keyCode<=57 
			|| event.keyCode>=96 && event.keyCode<=105 
			|| event.keyCode==8 
			|| event.keyCode==9 
			|| event.keyCode==37 
			|| event.keyCode==39 
			|| event.keyCode==46 ) ) 
	{
		event.returnValue=false;
	}
}