Form submit help! Urgent!

Hi i have created a a form that subits results to my email address, when submited the form just stays in view so u dnt now if it was successfully sent or not, how can on submit can i i bring up a thank you successfull page? Hope someone can help, thank you here is the form script

<!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”>
<html xmlns=“http://www.w3.org/1999/xhtml” xml:lang=“en” lang=“en”>
<head>
<meta http-equiv=“Content-Type” content=“text/html; charset=iso-8859-1” />
<title>form</title>
<script language=“JavaScript” type=“text/JavaScript”>
<!–
function MM_swapImgRestore() { //v3.0
var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a*)&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
if (a*.indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a*;}}
}

function MM_findObj(n, d) { //v4.01
var p,i,x; if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms*[n];
for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers*.document);
if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
if ((x=MM_findObj(a*))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
function MM_validateForm() { //v4.0
var i,p,q,nm,test,num,min,max,errors=’’,args=MM_validateForm.arguments;
for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=MM_findObj(args*);
if (val) { nm=val.name; if ((val=val.value)!="") {
if (test.indexOf(‘isEmail’)!=-1) { p=val.indexOf(’@’);
if (p<1 || p==(val.length-1)) errors+=’- ‘+nm+’ must contain an e-mail address.
‘;
} else if (test!=‘R’) { num = parseFloat(val);
if (isNaN(val)) errors+=’- ‘+nm+’ must contain a number.
‘;
if (test.indexOf(‘inRange’) != -1) { p=test.indexOf(’:’);
min=test.substring(8,p); max=test.substring(p+1);
if (num<min || max<num) errors+=’- ‘+nm+’ must contain a number between ‘+min+’ and ‘+max+’.
';
} } } else if (test.charAt(0) == ‘R’) errors += '- ‘+nm+’ is required.
'; }
} if (errors) alert('The following error(s) occurred:
'+errors);
document.MM_returnValue = (errors == ‘’);
}
//–>
</script>
<style type=“text/css”>
<!–
body {
background-image: url();
background-color: #f3ecd5;
margin-left: 3px;
margin-top: 0px;
margin-right: 0px;
margin-bottom: 0px;
}
body,td,th {
font-family: R Frutiger Roman;
color: #333333;
}
.style10 {
font-size: 11px;
line-height: 12pt;
font-weight: normal;
font-variant: normal;
}
.style12 {font-family: “B Frutiger Bold”}
a {
font-family: B Frutiger Bold;
font-size: 11px;
}
a:link {
text-decoration: none;
color: #333333;
}
a:visited {
text-decoration: none;
}
a:hover {
text-decoration: none;
color: #999999;
}
a:active {
text-decoration: none;
}
.style13 {font-family: “R Frutiger Roman”}
–>
</style>
<script language=“JavaScript” type=“text/JavaScript”>
<!–
function MM_reloadPage(init) { //reloads the window if Nav4 resized
if (init==true) with (navigator) {if ((appName==“Netscape”)&&(parseInt(appVersion)==4)) {
document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);
//–>
</script>
</head>
<body onload=“MM_preloadImages(‘submitover.jpg’)”>
<!–url’s used in the movie–>
<!–text used in the movie–>
<p class=“unnamed1”> </p><table width=“100” border=“0”>
<tr>
<td> </td>
<td><div align=“left”><img src=“logo1.png” /></td>
</tr>
</table>

<p align=“left” class=“style10”><table width=“504” border=“0”>
<table width=“412” border=“0”>
<tr>
<td width=“137”><span class=“style10”></span></span></td>
<td width=“265” class=“style10”><div align=“right”>These properties will be available later this year.<br>
Please register your interest and we will be in<br>
contact with you when the site is to be released</div></td>
</tr>
</table>
</p>
<form NAME=“addform” METHOD=“POST” enctype=“text/plain”
ACTION=‘mailto:ian@topacre.net?subject=Contact Form’ onSubmit=“return submitForms()”>

		  &lt;input type="hidden" name="FORM" value="Submit Link"&gt;

            &lt;div align="left"&gt; 
			&lt;table width="658" border="0" align="left" cellpadding="8" cellspacing="2"&gt;

              &lt;tr&gt;
                &lt;td width="117" class="style10"&gt;&lt;/td&gt;
                &lt;td width="31" class="style10"&gt;&lt;div align="right"&gt;Name&lt;/div&gt;&lt;/td&gt;
                &lt;td colspan="4" class="unnamed1"&gt;&lt;input name="Name" type="text" class="entryform " id="Name" size="32"&gt;&lt;/td&gt;
				

                

              &lt;/tr&gt;

              &lt;tr&gt;
                &lt;td colspan="2" class="unnamed1 style9"&gt;&lt;div align="right" class="style10"&gt;Address&lt;/div&gt;&lt;/td&gt;

                &lt;td colspan="4" rowspan="2" class="unnamed1"&gt;&lt;span class="unnamed1"&gt;
                  &lt;textarea name="Address" cols="24" rows="5" wrap="VIRTUAL" id="city"&gt;&lt;/textarea&gt;
                &lt;/span&gt;&lt;/td&gt;

              

              &lt;/tr&gt;
              &lt;tr&gt;
                &lt;td colspan="2" class="unnamed1"&gt;&nbsp;&lt;/td&gt;
              &lt;/tr&gt;

              &lt;tr&gt;
                &lt;td colspan="2" class="style9"&gt;&lt;div align="right" class="style10"&gt;Telephone number:&lt;/div&gt;&lt;/td&gt;

                &lt;td colspan="4" class="unnamed1"&gt;&lt;input name="tel" type="text" class="entryform " id="tel" value="" size="32"&gt;&lt;/td&gt;

               

              &lt;/tr&gt;

              &lt;tr&gt;
                &lt;td colspan="2" class="unnamed1 style9"&gt;&lt;div align="right" class="style10"&gt;Email&lt;/div&gt;&lt;/td&gt;

                &lt;td colspan="4" class="unnamed1"&gt;&lt;input name="email" type="text" class="entryform " id="email" value="" size="32"&gt;&lt;/td&gt;

      

              &lt;/tr&gt;
			  &lt;tr&gt;
			    &lt;td colspan="2" class="unnamed1 style9"&gt;&lt;div align="right" class="style10"&gt;where did you hear about us? 

                  &lt;/div&gt;&lt;/td&gt;

                &lt;td colspan="4" class="unnamed1"&gt;&lt;input name="where" type="text" class="entryform " id="where" value="" size="32"&gt;&lt;/td&gt;
				&lt;tr&gt;
                &lt;td colspan="2" class="unnamed1 style9"&gt;&lt;div align="right" class="style10"&gt;Comments&lt;/div&gt;&lt;/td&gt;

                &lt;td colspan="4" rowspan="2" class="unnamed1"&gt;&lt;span class="unnamed1"&gt;
                  &lt;textarea name="Address" cols="24" rows="5" wrap="VIRTUAL" id="city"&gt;&lt;/textarea&gt;
                &lt;/span&gt;&lt;/td&gt;

              

              &lt;/tr&gt;

		      &lt;/tr&gt;
			  &lt;tr&gt;
			    &lt;td colspan="2" class="unnamed1 style9"&gt;

                &lt;/td&gt;

                &lt;td width="119" class="unnamed1"&gt;&lt;/td&gt;



                &lt;td width="76" class="unnamed1"&gt;&lt;input type="submit" class="Arial11px" style="width:120" value="SUBMIT"&gt;&lt;/td&gt;
                &lt;td width="21" class="unnamed1"&gt;&nbsp;&lt;/td&gt;
                &lt;td width="184" class="unnamed1"&gt;&nbsp;&lt;/td&gt;
			  &lt;/tr&gt;
			  &lt;tr&gt;
			    &lt;td height="63" colspan="2" class="unnamed1 style9"&gt;

                &lt;/td&gt;

                &lt;td colspan="2" class="style10 style13"&gt;&lt;div align="right" class="style10"&gt;Or contact:&lt;br&gt;

Ian Whittle on Telephone 01908 282757 <br>
</div></td>
<td class=“style10 style13”> </td>
<td class=“style10 style13”> </td>
</tr>
</table>

</form>

</body>
</html>