javascript two action needed on submit

[jacka]

Hi
I have a form that needs post code checking.
On successful completion of the postcode check I wish to open another window (not a new one).
it sounds simple but not being javascript competent, its driving me crazy.
I have copied the postcode check from some one else:


function postit(){ //check postcode format is valid
test = document.details.pcode.value; size = test.length
test = test.toUpperCase(); //Change to uppercase
while (test.slice(0,1) == " ") //Strip leading spaces
{test = test.substr(1,size-1);size = test.length
}
while(test.slice(size-1,size)== " ") //Strip trailing spaces
{test = test.substr(0,size-1);size = test.length
}
document.details.pcode.value = test; //write back to form field
if (size < 6 || size > 8){ //Code length rule
alert(test + " is not a valid postcode - wrong length");
document.details.pcode.focus();
return false;
}
if (!(isNaN(test.charAt(0)))){ //leftmost character must be alpha character rule
alert(test + " is not a valid postcode - cannot start with a number");
document.details.pcode.focus();
return false;
}
if (isNaN(test.charAt(size-3))){ //first character of inward code must be numeric rule
alert(test + " is not a valid postcode - alpha character in wrong position");
document.details.pcode.focus();
return false;
}
if (!(isNaN(test.charAt(size-2)))){ //second character of inward code must be alpha rule
alert(test + " is not a valid postcode - number in wrong position");
document.details.pcode.focus();
return false;
}
if (!(isNaN(test.charAt(size-1)))){ //third character of inward code must be alpha rule
alert(test + " is not a valid postcode - number in wrong position");
document.details.pcode.focus();
return false;
}
if (!(test.charAt(size-4) == " ")){//space in position length-3 rule
alert(test + " is not a valid postcode - no space or space in wrong position");
document.details.pcode.focus();
return false;
}
count1 = test.indexOf(" ");count2 = test.lastIndexOf(" ");
if (count1 != count2){//only one space rule
alert(test + " is not a valid postcode - only one space allowed");
document.details.pcode.focus();
return false;

}
return true;

}
// End -->
</script>



my calling line is:

<input class="submit1" type="SUBMIT" value="Submit Info. " onclick="postit()" name="Button" >

and my form action call is :

<FORM name="details" ENCTYPE="multipart/form-data" ACTION="../this/that.php"
METHOD="POST">

All I need is teh post code to be checked for validity and then take me to that.php page, wihtout opeing a new page.

many thanks for your help.

[jacka]

Hi
Solved it.
used this instead:

<FORM name="details" ENCTYPE="multipart/form-data" ACTION="that/this.php" onsubmit="return postit()"
METHOD="POST">

thx