PHP/Javascript Apostrophe Problem

I'm running a store locator script in PHP that incorporates Google Maps and am having trouble displaying an apostrophe for store names and addresses. A value being passed to the Google API has to be pulled from a database using PHP. Unfortunately the javascript pukes when it runs into an apostrophe. Here is the script:

<script type="text/javascript">

var map = new GMap(document.getElementById("map"));
map.addControl(new GLargeMapControl());
map.addControl(new GMapTypeControl());
map.centerAndZoom(new GPoint(<?php echo $lon ?>, <?php echo $lat ?>), 7);

function createMarker(point, number)
var marker = new GMarker(point);

var html = number;
GEvent.addListener(marker, "click", function() {marker.openInfoWindowHtml(html);});
return marker;


while (!$rs2g->EOF)
$lat2g = $rs2g->Fields['latitude']->Value;
$lon2g = $rs2g->Fields['longitude']->Value;
$nameg = $rs2g->Fields['resname']->Value;
$add1g = $rs2g->Fields['resadd1']->Value;
$add2g = $rs2g->Fields['resadd2']->Value;
$add4g = $rs2g->Fields['resadd4']->Value;
$phoneg = $rs2g->Fields['resphone']->Value;
$flagg = substr($rs2g->Fields['reszip']->Value,0,5);
$webg = $rs2g->Fields['resweb']->Value;

echo "var point = new GPoint(" . $lon2g . "," . $lat2g . ");\n";
echo "var marker = createMarker(point, '<div id=\"infowindow\" style=\"white-space: nowrap;\">" . $nameg . "</div>');\n";
echo "map.addOverlay(marker);\n";
echo "\n";



The problem is specifically centered in the third to last echo line where $nameg is being called. As you can see by the script, apostrophes are used to define a vlaue for createMarker. Some of the locations have an apostrophe in their name and it's creating the error by prematurely ending the value for createMarker. Any workarounds? And while you're at it, can I modify that info window to also display addresses and phone numbers with line breaks?

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aescntConnect With a Mentor Commented:
actually, use addslashes(htmlentities($nameg)) :)

addslashes() will escape the slashes properly (necessary for writing JS strings with PHP), and htmlentities() will escape the < > and other relevant HTML symbols (necessary for printing HTML).
Anything you're writing out to HTML (ESPECIALLY inside Javascript, but really anywhere) should use htmlentities().

Replace $nameg with htmlentities($nameg)
Oh, and... sure, you can display anything you want in there.  Use an ordinary <br /> tag to break to a new line, just as you would in any other chunk of HTML.
Michel PlungjanIT ExpertCommented:
alternatively use

echo "var marker = createMarker(point, '<div id=\"infowindow\" style=\"white-space: nowrap;\">'+escape('" . $nameg . "')+'</div>');\n";
cbeaudry1Author Commented:
The last one was the only answer that actually worked. The others were still giving the same error..

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