function emailCheck (emailStr) {
/* The following pattern is used to check if the entered e-mail address
   fits the user@domain format.  It also is used to separate the username
   from the domain. */
var emailPat=/^(.+)@(.+)$/
/* The following string represents the pattern for matching all special
   characters.  We don't want to allow special characters in the address. 
   These characters include ( ) < > @ , ; : \ " . [ ]    */
var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
/* The following string represents the range of characters allowed in a 
   username or domainname.  It really states which chars aren't allowed. */
var validChars="\[^\\s" + specialChars + "\]"
/* The following pattern applies if the "user" is a quoted string (in
   which case, there are no rules about which characters are allowed
   and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
   is a legal e-mail address. */
var quotedUser="(\"[^\"]*\")"
/* The following pattern applies for domains that are IP addresses,
   rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
   e-mail address. NOTE: The square brackets are required. */
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
/* The following string represents an atom (basically a series of
   non-special characters.) */
var atom=validChars + '+'
/* The following string represents one word in the typical username.
   For example, in john.doe@somewhere.com, john and doe are words.
   Basically, a word is either an atom or quoted string. */
var word="(" + atom + "|" + quotedUser + ")"
// The following pattern describes the structure of the user
var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
/* The following pattern describes the structure of a normal symbolic
   domain, as opposed to ipDomainPat, shown above. */
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")


/* Finally, let's start trying to figure out if the supplied address is
   valid. */

/* Begin with the coarse pattern to simply break up user@domain into
   different pieces that are easy to analyze. */
var matchArray=emailStr.match(emailPat)
if (matchArray==null) {
  /* Too many/few @'s or something; basically, this address doesn't
     even fit the general mould of a valid e-mail address. */
	alert("Email address seems incorrect (check @ and .'s)")
	return false
}
var user=matchArray[1]
var domain=matchArray[2]

// See if "user" is valid 
if (user.match(userPat)==null) {
    // user is not valid
    alert("The username doesn't seem to be valid.")
    return false
}

/* if the e-mail address is at an IP address (as opposed to a symbolic
   host name) make sure the IP address is valid. */
var IPArray=domain.match(ipDomainPat)
if (IPArray!=null) {
    // this is an IP address
	  for (var i=1;i<=4;i++) {
	    if (IPArray[i]>255) {
	        alert("Destination IP address is invalid!")
		return false
	    }
    }
    return true
}

// Domain is symbolic name
var domainArray=domain.match(domainPat)
if (domainArray==null) {
	alert("The domain name doesn't seem to be valid.")
    return false
}

/* domain name seems valid, but now make sure that it ends in a
   three-letter word (like com, edu, gov) or a two-letter word,
   representing country (uk, nl), and that there's a hostname preceding 
   the domain or country. */

/* Now we need to break up the domain to get a count of how many atoms
   it consists of. */
var atomPat=new RegExp(atom,"g")
var domArr=domain.match(atomPat)
var len=domArr.length
if (domArr[domArr.length-1].length<2 || 
    domArr[domArr.length-1].length>3) {
   // the address must end in a two letter or three letter word.
   alert("The address must end in a three-letter domain, or two letter country.")
   return false
}

// Make sure there's a host name preceding the domain.
if (len<2) {
   var errStr="This address is missing a hostname!"
   alert(errStr)
   return false
}

// If we've gotten this far, everything's valid!
return true;
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		topmenu_03_over = newImage("images/topmenu_03-over.gif");
		topmenu_04_topmenu_03_over = newImage("images/topmenu_04-topmenu_03_over.gif");
		topmenu_05_topmenu_03_over = newImage("images/topmenu_05-topmenu_03_over.gif");
		topmenu_06_topmenu_03_over = newImage("images/topmenu_06-topmenu_03_over.gif");
		topmenu_07_topmenu_03_over = newImage("images/topmenu_07-topmenu_03_over.gif");
		topmenu_08_topmenu_03_over = newImage("images/topmenu_08-topmenu_03_over.gif");
		go_gray_02_over = newImage("images/go-gray_02-over.gif");
		go_gray2_02_over = newImage("images/go-gray2_02-over.gif");
		go_gray3_02_over = newImage("images/go-gray3_02-over.gif");
		go_gray4_02_over = newImage("images/go-gray4_02-over.gif");
		topmenu_01_01_over = newImage("images/topmenu_01_01-over.gif");
		News_side_08_over = newImage("images/News-side_08-over.jpg");
		News_side_14_over = newImage("images/News-side_14-over.jpg");
		News_side_20_over = newImage("images/News-side_20-over.jpg");
		News_top_side_08_over = newImage("images/News-top-side_08-over.jpg");
		homecontent_center_02_01_over = newImage("images/homecontent-center_02_01-ov.gif");
		preloadFlag = true;
	}
}





function checkRequiredFields(input)
{

    var requiredFields = new Array("Keyword");

    // TEXT TO DISPLAY THAT DESCRIBES THE MISSING FIELD(S) TO THE USER
    var fieldNames = new Array("A search string is required");


    // YOU SHOULD NOT NEED TO MAKE ANY CHANGES BELOW THIS POINT ------

    var fieldCheck   = true;
    var fieldsNeeded = "";

    for(var fieldNum=0; fieldNum < requiredFields.length; fieldNum++) {
        if ((input.elements[requiredFields[fieldNum]].value == "") ||
            (input.elements[requiredFields[fieldNum]].value == " ")) {

            fieldsNeeded += fieldNames[fieldNum] + "\n\t";
            fieldCheck = false;
        }
    }

    // ALL REQUIRED FIELDS HAVE BEEN ENTERED
    if (fieldCheck == true)
    {
        return true;
    }
    // SOME REQUIRED FIELDS ARE MISSING VALUES
    else
    {
        alert(fieldsNeeded);
        return false;
    }
}



function dostuff(input){
	var strquotetype = contactform.quotetype.options[contactform.quotetype.selectedIndex].value;

	if (strquotetype == "Request_Hard_Copy_Catalog") {
	return checkRequiredFieldscontact2(input);
	}
	
	else{
		return checkRequiredFieldscontact(input);
	}

}


function checkRequiredFieldscontact(input)
{
	
	
    var requiredFields = new Array("Email");
    var fieldNames = new Array("Email");
    // YOU SHOULD NOT NEED TO MAKE ANY CHANGES BELOW THIS POINT ------

    var fieldCheck   = true;
    var fieldsNeeded = "\nA value must be entered in the following field(s):\n\n\t";

    for(var fieldNum=0; fieldNum < requiredFields.length; fieldNum++) {
        if ((input.elements[requiredFields[fieldNum]].value == "") ||
            (input.elements[requiredFields[fieldNum]].value == " ")) {

            fieldsNeeded += fieldNames[fieldNum] + "\n\t";
            fieldCheck = false;
        }
    }

    // ALL REQUIRED FIELDS HAVE BEEN ENTERED
    if (fieldCheck == true)
    {
        return true;
    }
    // SOME REQUIRED FIELDS ARE MISSING VALUES
    else
    {
        alert(fieldsNeeded);
        return false;
    }
}

function checkRequiredFieldscontact2(input)
{
	
	
    	var requiredFields = new Array("First_Name",
                                   "Last_Name",
								   "Email",
								   "CompanyName",
                                   "Street_Address",
								   "City",
								   "State",
								   "Zip_Code",
								   "Country");

    	var fieldNames = new Array("First name",
                               "Last name",
							   "Email",
							   "CompanyName",
							   "Street Address",
							   "City",
							   "State",
							   "Zip Code",
							   "Country");
    // YOU SHOULD NOT NEED TO MAKE ANY CHANGES BELOW THIS POINT ------

    var fieldCheck   = true;
    var fieldsNeeded = "\nA value must be entered in the following field(s):\n\n\t";

    for(var fieldNum=0; fieldNum < requiredFields.length; fieldNum++) {
        if ((input.elements[requiredFields[fieldNum]].value == "") ||
            (input.elements[requiredFields[fieldNum]].value == " ")) {

            fieldsNeeded += fieldNames[fieldNum] + "\n\t";
            fieldCheck = false;
        }
    }

    // ALL REQUIRED FIELDS HAVE BEEN ENTERED
    if (fieldCheck == true)
    {
	var strEmail = document.contactform.Email.value;
	//alert (strEmail);
	//return false;
		return emailCheck(strEmail);
        //return true;
    }
    // SOME REQUIRED FIELDS ARE MISSING VALUES
    else
    {
        alert(fieldsNeeded);
        return false;
    }
}


function checkemailfields(input)
{
	

    	var requiredFields = new Array("Email");

    	var fieldNames = new Array("Email");
		
    // YOU SHOULD NOT NEED TO MAKE ANY CHANGES BELOW THIS POINT ------

    var fieldCheck   = true;
    var fieldsNeeded = "\nA value must be entered in the following field(s):\n\n\t";

    for(var fieldNum=0; fieldNum < requiredFields.length; fieldNum++) {
        if ((input.elements[requiredFields[fieldNum]].value == "") ||
            (input.elements[requiredFields[fieldNum]].value == " ")) {

            fieldsNeeded += fieldNames[fieldNum] + "\n\t";
            fieldCheck = false;
        }
    }

    // ALL REQUIRED FIELDS HAVE BEEN ENTERED
    if (fieldCheck == true)
    {
	var strEmail = document.regform.Email.value;
	//alert (strEmail);
	//return false;
		return emailCheck(strEmail);
        //return true;
    }
    // SOME REQUIRED FIELDS ARE MISSING VALUES
    else
    {
        alert(fieldsNeeded);
        return false;
    }
}