Правка, закрывающий тег добавила, но не воркает...
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<!DOCTYPE HTML>
<html>
<head>
<title>Untitled</title>
</head>
<body>
<div id="content" role="main">
<div class="noindex">
<div id="toolsHeading">
<div class="tools-dashboard clearfix">
<div class="mbrHomeHeader">
<div class="header-content">
<h1>
<strong>Welcome</strong>
MADAM BROSHKINA
</h1>
</div>
</div>
</div>
</div>
</div>
</div>
<script>
function iWantKnow()
{
var text1 = document.getElementById('content').getElementsByTagName('h1')[0].lastChild.data;
return text1();
}
</script>
<form>
<p>Dear <script>document.write(iWantKnow());</script> , please enter valid phone number</p>
</form>
</body>
</html>