<script type="text/javascript" src="http://ajax.googleapis.com/
ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type="text/javascript">
$(function()
{

$("#scontent").focus(function()
{
$(this).animate({"height": "85px"}, "fast" );
$("#sbutton_block").slideDown("fast");
return false;
});

$("#scontent").blur(function()
{


		$("#scontent").animate({"height": "30px"}, "fast" );
		//$("#sbutton_block").slideUp("fast");

		return false;

});

});

<!--
function imposeMaxLength(Object, MaxLen)
{
  return (Object.value.length <= MaxLen);
}
-->

</script>

<form method="post" action="PHP_PAGE.php">
<div id="vsetko">
<textarea  id="scontent" style="
overflow: auto;
width:722px;
height:30px;
border:solid 2px #006699;
font-size:14px;
" onkeypress="return imposeMaxLength(this, 250);"></textarea>
<div id="sbutton_block" style="display:none;">
<input type="submit" onClick="document.getElementById('scontent').focus();
" id="sbutton" style="
background-color:#006699;
color:#ffffff;
font-size:13px;
font-weight:bold;
padding:4px;
margin-bottom: 5px;
"
value=" Share "/>
</div>
</div>
</form>