//Function to trim string
function strTrim(tmpStr)
{
	tmpStr = tmpStr.replace(/^\s+/,"");//remove leading
	tmpStr = tmpStr.replace(/\s+$/,"");//remove trailing
	return tmpStr;
}

//Function to trim form fields
function trimFields()
{
	for(var i=0; i < obj.elements.length; i++)
	{
		if(obj.elements[i].type == "text" || obj.elements[i].type == "textarea" || obj.elements[i].type == "password")
		{
			obj.elements[i].value = strTrim(obj.elements[i].value);
		}
	}
}

// Function to validate email
function chkEmail(tmpStr)
{
	var email_pat = /^[a-z][a-z0-9_\.\-]*[a-z0-9]@[a-z0-9]+[a-z0-9\.\-_]*\.[a-z]+$/i;
	return(email_pat.test(tmpStr));
}

function validateForm()
{
	trimFields();
	if(obj.contact_name.value == "")
	{
		alert("Please enter Name");
		obj.contact_name.focus();
		return;
	}
	if(obj.email.value == "")
	{
		alert("Please enter Email");
		obj.email.focus();
		return;
	}
	if(!chkEmail(obj.email.value))
	{
		alert("Please enter a valid Email");
		obj.email.focus();
		obj.email.select();
		return;
	}
	if(obj.phone.value == "")
	{
		alert("Please enter your Phone");
		obj.phone.focus();
		return;
	}
	if(obj.message.value == "")
	{
		alert("Please enter Message");
		obj.message.focus();
		return;
	}
	//Verified?
	obj.action = 'php_mailer.php';
	obj.submit();
}