function input_str()
	{
		if((window.event.keyCode >= 65 && window.event.keyCode <= 90) || (window.event.keyCode >= 97 && window.event.keyCode <= 122) || (window.event.keyCode == 32)) {
		}else{
			window.event.keyCode = "";
		}	
	}

	function input_number()
	{
		if( window.event.keyCode >= 48 && window.event.keyCode <= 57) {
		} else {
			window.event.keyCode = "";
		}
	}

	function trim(str){
		str = str.replace(/^\s*/,'').replace(/^\s*$/,'');
		return str;
	}

	function input_number2()
	{
		if (( window.event.keyCode >= 48 && window.event.keyCode <= 57) || (window.event.keyCode == 45)){
		} else {
			window.event.keyCode = "";
		}
	}

	function img_chk(fn){
		var file = eval("document.form1."+fn+".value");
		var ext = file.slice(file.indexOf(".")).toLowerCase();
		var obj = document.getElementById(fn);

		if ((ext != ".jpg") && (ext != ".gif") && (ext != ".JPG") && (ext != ".GIF") && (ext != ".png") && (ext != ".PNG"))
		{
			alert("À̹ÌÁöÆÄÀÏ ¸¸ µî·Ï °¡´ÉÇÕ´Ï´Ù.");
			obj.outerHTML = obj.outerHTML;
		}
	}