// JavaScript Document
function contactvalid()
{
	if(document.getElementById('yourname').value=="")	
	{
		document.getElementById('yn').innerHTML="Please Enter Your Name";
		document.getElementById('yourname').focus();
		return false;
	}
	else
	document.getElementById('yn').innerHTML="";
	
	if(document.getElementById('youremail').value=="")	
	{
		document.getElementById('ye').innerHTML="Please Enter your Email id";
		document.getElementById('youremail').focus();
		return false;
	}
	else
	document.getElementById('ye').innerHTML="";
	
	if(document.getElementById('youremail').value!="")
	{
		var x = document.getElementById('youremail').value;
		var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
		if (filter.test(x))
		{
			 document.getElementById('ye').innerHTML="";
		}
		else 
		{
	 	 document.getElementById('ye').innerHTML="Invalid Email Address";
		 document.getElementById('youremail').focus();
		  return false;
		}
	}
	
	if(document.getElementById('comments').value=="")	
	{
		document.getElementById('yc').innerHTML="Please Enter your Comments";
		document.getElementById('comments').focus();
		return false;
	}
	else
	document.getElementById('yc').innerHTML="";
}