function checkForm(form)
{
	if (form.username.value=="")
	{
		alert("请填写姓名全称");
		form.username.focus();
		return false;
	}
	var isCheck ;
	isCheck=false;
	for(i=0;i<form.sex.length;i++){
		if(form.sex[i].checked){
			isCheck = true;
		}
	}
	if (!isCheck){
		alert("请选择性别");
		form.sex[0].focus();
		return false;
	}
	if (form.mobile.value=="")
	{
		alert("请填写移动电话");
		form.mobile.focus();
		return false;
	}
	if (form.phone.value=="")
	{
		alert("请填写固定电话");
		form.phone.focus();
		return false;
	}
	
	if( form.email.value != "") 
	{
		if(form.email.value.charAt(0)=="."||form.email.value.charAt(0)=="@"||form.email.value.indexOf('@', 0)== -1||form.email.value.indexOf('.', 0)== -1||form.email.value.lastIndexOf("@")==form.email.value.length-1||form.email.value.lastIndexOf(".")==form.email.value.length-1)
		{
			alert("Email 地址格式有误，请重新输入！");
			form.email.focus();
			return false;
		}
	}	
	if (form.address.value=="")
	{
		alert("请填写联系地址");
		form.address.focus();
		return false;
	}
	if (form.zipcode.value=="")
	{
		alert("请填写邮政编码");
		form.zipcode.focus();
		return false;
	}
		
	if (form.content.value=="")
	{
		alert("请填写个人说明");
		form.content.focus();
		return false;
	}	
}