textbox scroller feature

[alex.kemsley]

Hi all,
Javascript getting the better of me again,
I need this script that is a text box scoller to have the feature when
you click the text box it stops the scolling, clears the text so that
the user can type in it.
Your help as ever is much apreciated.
Regards,
Alex

<form name="news">
<textarea name="news2" cols=40 rows=4 wrap=virtual></textarea>
</form>

<script language=JavaScript>

var newsText = new Array();
newsText[0] = "Typing Text JScript v1\nDeveloped on Sunday, April 15th,
2001...";
newsText[1] = "This is a text-typing DHTML demo. \nScript featured on
http://javascriptkit.com";

var ttloop = 1; // Repeat forever? (1 = True; 0 = False)
var tspeed = 50; // Typing speed in milliseconds (larger number =
slower)
var tdelay = 1000; // Time delay between newsTexts in milliseconds

// ------------- NO EDITING AFTER THIS LINE ------------- \\
var dwAText, cnews=0, eline=0, cchar=0, mxText;

function doNews() {
mxText = newsText.length - 1;
dwAText = newsText[cnews];
setTimeout("addChar()",1000)
}
function addNews() {
cnews += 1;
if (cnews <= mxText) {
dwAText = newsText[cnews];
if (dwAText.length != 0) {
document.news.news2.value = "";
eline = 0;
setTimeout("addChar()",tspeed)
}
}
}
function addChar() {
if (eline!=1) {
if (cchar != dwAText.length) {
nmttxt = ""; for (var k=0; k<=cchar;k++) nmttxt +=
dwAText.charAt(k);
document.news.news2.value = nmttxt;
cchar += 1;
if (cchar != dwAText.length) document.news.news2.value += "_";
} else {
cchar = 0;
eline = 1;
}
if (mxText==cnews && eline!=0 && ttloop!=0) {
cnews = 0; setTimeout("addNews()",tdelay);
} else setTimeout("addChar()",tspeed);
} else {
setTimeout("addNews()",tdelay)
}
}

doNews()
</script>