function vdate(form) {
form.submit();
return true;
}

<!-------------------------------------------------->

function isEmpty(str) {
for (var intLoop = 0; intLoop < str.length; intLoop++)
	if ( (str.charAt(intLoop) != " ") &&  (str.charAt(intLoop)!= "\n") && (str.charAt(intLoop)!= "\r"))
		return false;
return true;
}

function gosubmit() {
		
		if (document.frame_main.keyword.value.length=="") {
			alert ("검색 조건을 입력하세요")
			document.frame_main.keyword.focus();
			return false
		}else {
        	document.frame_main.submit()
        }
}