function openWindow( pageToLoad, winName, width, height, center) 
{
    xposition=0; yposition=0;
    if ((parseInt(navigator.appVersion) >= 4 ) && (center)){
	xposition = (screen.width - width) / 2;
	yposition = (screen.height - height) / 2;
    }
    args = "width=" + width + "," 
    + "height=" + height + "," 
    + "location=0," 
    + "menubar=0,"
    + "resizable=No,"
    + "scrollbars=1,"
    + "status=0," 
    + "titlebar=0,"
    + "toolbar=0,"
    + "hotkeys=0,"
    + "screenx=" + xposition + ","  //NN Only
    + "screeny=" + yposition + ","  //NN Only
    + "left=" + xposition + ","     //IE Only
    + "top=" + yposition;           //IE Only

    window.open( pageToLoad,winName,args );
}

function CheckRegisterFields() 
{
	var account = document.CreateAccount;

	if (account.UserName.value == "") {
		alert("Please enter your 'User Name'.");
		return false;
	}
	else if (account.Password.value == "") {
		alert("Please enter a 'Password'.");
		return false;
	}
	else if (account.Password.value != account.ConfirmPassword.value){
		alert("Your 'Password' and 'Confirm Password' do not match.");
		return false;
	}
	else if (account.Email.value == "") {
		alert("Please enter your 'Email Address'.");
		return false;
	}
	else if (account.Name.value == "") {
		alert("Please enter your 'Name'.");
		return false;
	}

	return true;
}
function CheckPwdFields() 
{
	var chgpwd = document.ChangePassword;

	if (chgpwd.OldPwd.value == "") {
		alert("Please enter a 'Old Password'.");
		return false;
	}
	else if (chgpwd.NewPwd.value == "") {
		alert("Please enter a 'New Password'.");
		return false;
	}
	else if (chgpwd.NewPwd.value != account.ConfirmPassword.value){
		alert("Your 'New Password' and 'Confirm Password' do not match.");
		return false;
	}

	return true;
}

function CheckUserFields() 
{
	var addr = document.UpdateAcct;

	if (addr.Name.value == "") {
		alert("Please enter your 'Name'.");
		return false;
	}
	else if (addr.Address1.value == "") {
		alert("Please enter a 'Address'.");
		return false;
	}
	else if (addr.City.value == "") {
		alert("Please enter your 'City'.");
		return false;
	}
	else if (addr.provList.value == "") {
		alert("Please enter your 'Province'.");
		return false;
	}
	else if (addr.PostalCode1.value == "") {
		alert("Please enter your 'Postal Code'.");
		return false;
	}
	else if (addr.PostalCode2.value == "") {
		alert("Please enter your 'Postal Code'.");
		return false;
	}
	else if (addr.Email.value == "") {
		alert("Please enter your 'Email Address'.");
		return false;
	}
	if (addr.PostalCode1.value != "")
	{
		var s1 = addr.PostalCode1.value;
		s1=s1.toUpperCase();    // in case of lowercase characters
		// Check for legal characters in string - note index starts at zero
		if ('ABCEGHJKLMNPRSTVXY'.indexOf(s1.charAt(0))<0) 
		{
			alert("Please enter a valid postal code.");
			return false
		}
		if ('0123456789'.indexOf(s1.charAt(1))<0) 
		{
			alert("Please enter a valid postal code.");
			return false
		}
		if ('ABCDEFGHJKLMNPQRSTUVWXYZ'.indexOf(s1.charAt(2))<0) 
		{
			alert("Please enter a valid postal code.");
			return false
		}
	}
	if (addr.PostalCode2.value != "")
	{
		var s2 = addr.PostalCode2.value;
		s2=s2.toUpperCase();    // in case of lowercase characters
		// Check for legal characters in string - note index starts at zero
		if ('0123456789'.indexOf(s2.charAt(0))<0) 
		{
			alert("Please enter a valid postal code.");
			return false
		}
		if ('ABCDEFGHJKLMNPQRSTUVWXYZ'.indexOf(s2.charAt(1))<0) 
		{
			alert("Please enter a valid postal code.");
			return false
		}
		if ('0123456789'.indexOf(s2.charAt(2))<0) 
		{
			alert("Please enter a valid postal code.");
			return false
		}
	}

	return true;
}


function CheckSearchKW() 
{
	var search = document.searchform;

	if (search.kw.value == "") {
		alert("Please enter keyword to search.");
		return false;
	}

	return true;
}
function confirmPlaceOrder()
{
var agree=confirm("Are you sure you want to place this order?");
if (agree)
	return true ;
else
	return false ;
}
function validate(string) {
    if (!string) return false;
    var Chars = "0123456789";

    for (var i = 0; i < string.length; i++) {
       if (Chars.indexOf(string.charAt(i)) == -1)
          return false;
    }
    return true;
}