function goback() {
history.back()
}

function drawAlert() {
alert ("Sorry, this link is unavailabe at present!");
}

function printerFriendly(url, win) 
{
msgWindow=window.open(url,win,"toolbar=no,top=10,left=10,width=640,height=580,directories=no,status=no,resize=yes,scrollbars=yes,menubar=yes")
} 

function printpage() {
window.print()
}

function submitSearch() {

missinginfo = "";

var keywordLength = (document.search.keywords.value);
var invalidWords = 0

if (keywordLength.length < 3 ) {
	missinginfo += "Your search term must have at least 3 characters";
}
if (document.search.keywords.value.indexOf('http') !== -1) {
	invalidWords = 1
}
if (document.search.keywords.value.indexOf('mailto') !== -1) {
	invalidWords = 1
}
if (document.search.keywords.value.indexOf('href') !== -1) {
	invalidWords = 1
}
if (document.search.keywords.value.indexOf('"') !== -1) {
	invalidWords = 1
}
if (document.search.keywords.value.indexOf('/') !== -1) {
	invalidWords = 1
}
if (document.search.keywords.value.indexOf('*') !== -1) {
	invalidWords = 1
}
if (document.search.keywords.value.indexOf(':') !== -1) {
	invalidWords = 1
}
if (document.search.keywords.value.indexOf('<') !== -1) {
	invalidWords = 1
}
if (document.search.keywords.value.indexOf('>') !== -1) {
	invalidWords = 1
}
if (document.search.keywords.value.indexOf('|') !== -1) {
	invalidWords = 1
}
if (document.search.keywords.value.indexOf('?') !== -1) {
	invalidWords = 1
}
if (document.search.keywords.value.indexOf('_') !== -1) {
	invalidWords = 1
}
if (document.search.keywords.value.indexOf('@') !== -1) {
	invalidWords = 1
}
if (document.search.keywords.value.indexOf('www') !== -1) {
	invalidWords = 1
}
if (document.search.keywords.value.indexOf('index') !== -1) {
	invalidWords = 1
}
if (document.search.keywords.value.indexOf('\'') !== -1) {
	invalidWords = 1
}

if (invalidWords !== 0)  {
	missinginfo = "Your search term contains an invalid character or word.";
}

if (missinginfo != "") {
	missinginfo = missinginfo + "\n" + "\nPlease re-enter and SEARCH again";
	alert(missinginfo);
}
else
	//alert("submit form");
	document.search.submit();
}

function replace(string,text,by) {
    // Replaces text with by in string
    var strLength = string.length, txtLength = text.length;
    if ((strLength == 0) || (txtLength == 0)) return string;

    var i = string.indexOf(text);
    if ((!i) && (text != string.substring(0,txtLength))) return string;
    if (i == -1) return string;

    var newstr = string.substring(0,i) + by;

    if (i+txtLength < strLength)
        newstr += replace(string.substring(i+txtLength,strLength),text,by);

    return newstr;
}

function replace2(string,text,by) {
    // Replaces text with by in string
    var strLength = string.length, txtLength = text.length;
    if ((strLength == 0) || (txtLength == 0)) return string;

    var i = string.indexOf(text);
    if ((!i) && (text != string.substring(0,txtLength))) return string;
    if (i == -1) return string;

    var newstr = string.substring(0,i) + by;

    if (i+txtLength < strLength)
        newstr += replace(string.substring(i+txtLength,strLength),text,by);

    return newstr;
}