Contact form doesnt send email, Error page - html

Question

Hi I really need help with this.
I have just finished a design for a client and her website went live on Thursday, however the contact form doesn't work. I do know things about HTML/CSS but I am very basic with stuff with script. When you fill in the form and press send a 'not found' page appears.
Whats gone wrong?
I have tried looking at other posts about this kind of thing but I think the code needs looking at.
Much appreciated
//email form validation
function everif(str) {
var at="#"
var punct="."
var lat=str.indexOf(at)
var lstr=str.length
var lpunct=str.indexOf(punct)
if (str.indexOf(at)==-1){
alert("Valid email must be entered")
return false
}
if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
alert("Valid email must be entered")
return false
}
if (str.indexOf(punct)==-1 || str.indexOf(punct)==0 || str.indexOf(punct)==lstr){
alert("Valid email must be entered")
return false
}
if (str.indexOf(at,(lat+1))!=-1){
alert("Valid email must be entered")
return false
}
if (str.substring(lat-1,lat)==punct || str.substring(lat+1,lat+2)==punct){
alert("Valid email must be entered")
return false
}
if (str.indexOf(punct,(lat+2))==-1){
alert("Valid email must be entered")
return false
}
if (str.indexOf(" ")!=-1){
alert("Valid email must be entered")
return false
}
return true
}
function evalid(){
var emailID=document.contact_form.mail
if (everif(emailID.value)==false){
emailID.focus()
return false
}
//empty field validation
var fname=document.contact_form.fname
if ((fname.value==null)||(fname.value=="")){
alert("Fields marqued with * must be entered")
fname.focus()
return false
}
var lname=document.contact_form.lname
if ((lname.value==null)||(lname.value=="")){
alert("Fields marqued with * must be entered")
lname.focus()
return false
}
var message=document.contact_form.message
if ((message.value==null)||(message.value=="")){
alert("Fields marqued with * must be entered")
message.focus()
return false
}
return true
}
</script>
<form name="contact_form" method="post" action="mailer.php" onSubmit="return evalid()">
<table border="0"><tr>
<td colspan="2"><input name="fname" type="text" value="First Name" size="40" /></td>
</tr><tr>
<td colspan="2"><input name="lname" type="text" value="Last Name" size="40" /></td>
</tr><tr>
<td colspan="2"><input type="text" value="Email" name="mail" size="40" /></td>
</tr><tr>
<td colspan="2"><textarea name="message" value="Your Message" onkeyup="return limitarelungime(this, 255)" cols="35" rows="5"></textarea></td>
</tr><tr>
<td></td>
<td colspan="2"></td>
</tr>
<tr>
<td align="right">
<input type="image" src="images/send.png" value="Submit" alt="submit" name="submit"/>
</td>
<td align="right"><alt="Valid Contact Form" width="20" height="20" border="0" /></a></td>
</tr>
</table>
</form>
</div>

Answer 1

Page not found error suggests that there is some problem with the URL redirect quite simply or the file does not exist. In your case if the form is sending the data to a mailer.php script, just make sure that the path of the file is entered correctly and that the file is there in a particular folder according to the path. Your problem should be solved.