// JavaScript Document



function check_full(e) 
{
	if(e=='')
	{
		alert("不能为空，请认真填写！");
		return false;
	}
}

// js判断表单项只能为数字和"_",用于电话/银行帐号验证上,可扩展到域名注册等
function isNumber(String)
{
	var   Letters   =   "1234567890-";   //可以自己增加可输入值
	var   i;
	var   c;
	if(String.charAt(   0   )=='-')
	return   false;
	if(   String.charAt(   String.length   -   1   )   ==   '-'   )
	return   false;
	for(   i   =   0;   i   <   String.length;   i   ++   )
	{
		c   =   String.charAt(   i   );
		if   (Letters.indexOf(   c   )   <   0)
		return   false;
	}
	return   true;
}


function Check_tel()
{
	if( (!isNumber(document.guesbook.tel.value)) || (document.guesbook.tel.value=="") ){
		document.guesbook.tel.focus();
		alert("您填写的号码格式不合格！");
		return false;
	}
	return   true;
}

function Check_phone()
{
	if( (!isNumber(document.guesbook.phone.value)) || (document.guesbook.phone.value=="") ){
		document.guesbook.phone.focus();
		alert("您填写的号码格式不对或空值！");
		return false;
	}
	return   true;
}

function Check_qq()
{
	
	if( (!isNumber(document.guesbook.qq.value)) || (document.guesbook.qq.value=="") ){
		document.guesbook.qq.focus();
		alert("您填写的号码格式不对或空值！");
		return false;
	}
	return   true;
}


function chkemail(a)
{
	var i=a.length;
	var temp = a.indexOf('@');
	var tempd = a.indexOf('.');
	if (temp > 1) {
		if ((i-temp) > 3){
			if ((i-tempd)>0){
				return 1;
			}
		}
	}
	return 0;     
}     
function Check_email()
{
	if(chkemail(document.guesbook.email.value)!=1){
		document.guesbook.email.focus();
		alert("您填写的email格式不合格！");
		return false;
	}
	return   true;
}
function Check_msn()
{
	if(chkemail(document.guesbook.msn.value)!=1){
		document.guesbook.msn.focus();
		alert("您填写的msn格式不合格！");
		return false;
	}
	return   true;
}


function CheckForm1()
{
	if( (document.guesbook.hname.value=="") || (document.guesbook.user.value=="") || (document.guesbook.tel.value=="") || (document.guesbook.phone.value=="") || (document.guesbook.email.value=="") || (document.guesbook.qq.value=="") || (document.guesbook.msn.value=="") || (document.guesbook.title.value=="") || (document.guesbook.diytime.value=="") || (document.guesbook.class1.value=="") || (document.guesbook.uploadf.value=="") || (document.guesbook.note.value=="") )
	{
		alert("资料不能为空，请认真填写！");
		return false;
	}
}