function validateComment(form)
{
	if(trim(form.comment.value)=="")
	{
		alert("Please enter your comment description");
		form.comment.focus();
		return false;
	}
	else if(trim(form.comment.value)>2000)
	{
		alert("Please enter only upto 2000 characters");
		form.comment.focus();
		return false;
	}
	
	return true;
}

function reviewCommentPreview(){
	var NewText 	= document.getElementById("reviews_comment_textarea").value;
	splitText 		= NewText.replace(/\n\r?/g, '<br />');
	var DivElement 	= document.getElementById("comment_preview");
		
	if(NewText!=""){
		DivElement.innerHTML = "<p id=\"review_comment_text\" style=\"color:red;\">Comment Preview</p><div id=\"review_comment_tbg\"></div><div id=\"review_comment_bg\">"+splitText+"</div><div id=\"review_comment_bbg\"></div>";
	}else{
		DivElement.innerHTML = "";
	}
}

function trim(s)
{
  return s.replace(/^\s+|\s+$/, '');
}