// JavaScript Document
function on_blur(obj, default_value)
{
	var this_value = trim_all(obj.value);	
	if( this_value == '')
		obj.value = default_value;
}

function on_focus(obj, default_value)
{
	var this_value = trim_all(obj.value);	
	if( this_value == default_value)
		obj.value = '';
}
function trim_all(s_value)
{
	return s_value.replace(/(^\s+)|(\s+$)/g, '');
}

function contact_submit(formNm)
{
	var user_name=trim_all(formNm.contact_name.value);
	var user_email=trim_all(formNm.contact_email.value);
	var user_message=trim_all(formNm.contact_message.value);
	if(user_name == "")	
	{
		alert("Please enter valid Name");
		formNm.contact_name.focus();
		return false;
	}else if(user_email == "")	
	{
		alert("Please enter valid Email Address");
		formNm.contact_email.focus();
		return false;
	}else if(user_message== "")	
	{
		alert("Please enter Message.");
		formNm.contact_message.focus();
		return false;
	}
	
	if (window.XMLHttpRequest)
	{
		xmlhttp = new XMLHttpRequest();
	} else if(window.ActiveXObject)
	{
		xmlhttp = new ActiveXObject("MSXML2.XMLHTTP");
	}
	var checkURL = "contactus_submit.php";
	var posturl = "user_name="+user_name+'&user_email='+user_email+'&user_message='+user_message;
	xmlhttp.open("POST",checkURL,true);
	xmlhttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded; charset=UTF-8");
	xmlhttp.send(posturl);
	xmlhttp.onreadystatechange=function(){ResultContactUs()}
}

function ResultContactUs() 
{
	if (xmlhttp.readyState == "4")
	{
		if(trim_all(xmlhttp.responseText)=='YES')
		{
			document.getElementById('contact_name').value='';
			document.getElementById('contact_email').value='';
			document.getElementById('contact_message').value='';
			//document.getElementById('contactus_tr_id').style.display='none';
			document.getElementById('contactus_tr_id').innerHTML = "&nbsp;&nbsp;<strong style='color:#FF0000; font-size:14px;' align='center'>Thank You for contacting Dr.Lenarz</strong>";
		}
	}
}