function len(txt,i,j)
{
var len = txt.replace(/[\n\r]/g,"");
var len = len.length;
if(len < i){
return false;
}else if(len > j){
return false;
}else {
return true;
}
}
function isEmail(t)   {   
  var   stra=/^\s*\w+\@\w+(\.\w+)+\s*$/i;   
  if(stra.test(t))   
return   true;   
  else   
  return   false;   
  }
function IsTel(telstr)
{
var reg=/[^0-9-]/g;
if (telstr!=""){
if (reg.test(telstr)){
return(false);
}else{
return(true);
}
}
}
function isNumber(oNum) 
{ 
if(!oNum) return false; 
var strP=/^\d+(\.\d+)?$/; 
if(!strP.test(oNum)) return false; 
try{ 
if(parseFloat(oNum)!=oNum) return false; 
} 
catch(ex) 
{ 
return false; 
} 
return true; 
}


function Check()
{
if (document.form1.user.value=="")
{
alert("The name field is required£¡");
document.form1.user.focus();
document.form1.user.select();
return false;
}

if (document.form1.company.value=="")
{
alert("The company field is required£¡");
document.form1.company.focus();
document.form1.company.select();
return false;
}

if (document.form1.content.value=="")
{
alert("The content field is required£¡");
document.form1.content.focus();
document.form1.content.select();
return false;
}

if (document.form1.phone.value == "")
{
alert("the telephone field is required£¡");
document.form1.phone.focus();
document.form1.phone.select();
return false;
}
if (!len(document.form1.phone.value,i=8,j=16) || !IsTel(document.form1.phone.value))
{
alert("please check your telephone NO.");
document.form1.phone.focus();
document.form1.phone.select();
return false;
}

if (document.form1.email.value=="")
{alert("The email field is required£¡");
document.form1.email.focus();
document.form1.email.select();
return false;
}
if (!len(document.form1.email.value,i=9,j=40))
{
alert("please check your email address");
document.form1.email.focus();
document.form1.email.select();
return false;
}
if (!isEmail(document.form1.email.value))
{
alert("please check your email address");
document.form1.email.focus();
document.form1.email.select();
return false;
}

document.form1.add.value="ywyad";
}

function id_keyup(txtinput)
{
txtinput.value=txtinput.value.replace(/(^\s*)|(\s*$)/g, "");
}