<form method="post" action="http://www.baidu.com" id="register">
		<label>
				<input type="text" name="pf_parents_name" id="pf_parents_name" />
		</label>
 
		<label>
				<input type="text" name="pf_child_name" id="pf_child_name" />
		</label>
		<label>
				<input type="submit" name="button" id="button" value="Submit" />
		</label>
</form>

<form method="post" action="http://www.baidu.com" id="register" onsubmit="javascript:return formCheck()">

<script type="text/javascript">
	function formCheck() {
		var pn = document.getElementById("pf_parents_name");
		var cn = document.getElementById("pf_child_name");
		if(!notNull(pn.value) || !isChinese(pn.value)) {
			pn.focus();
			return false;
		}
		if(!notNull(cn.value) || !isChinese(cn.value)) {
			cn.focus();
			return false;
		}
		return true;
	}
	function notNull(s) {
		if(s!="" && s!=null) {
			return true;
		} else {
			return false;
		}
	}
	function isChinese(s) {
		for(var i=0;i<s.length;i++) {
			var charCode = s.charCodeAt(i);
			if(charCode < 255) {
				return false;
			}
		}
		return true;
	}
	function isTel(s) {
		var reg=/^([0-9]|[\-])+$/g ;
		if(s.length>18){
			return false;
		} else{
			return reg.test(s);
		}
	}
	function isEmail(t) {
		var reg = /^([\.a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+((\.[a-zA-Z0-9_-]+){1,2})+$/;
		return reg.test(t);
	}
 
	function isNumber(t) {
		var reg = /^([0-9])+$/g ;
		return reg.test(t);
	}
</script>