function validatefield()
{
		if(document.getElementById('txtname').value=="")
		{
			alert("Please Enter Your Name");
			document.getElementById('txtname').focus();
			return false;
		}  

		else if(document.getElementById('txtemail').value=="")
		{
			alert("Please Enter Your  EmailId");
			document.getElementById('txtemail').focus();
			return false;
		}		
		else if(document.getElementById('txtemail').value)
		{  
		    
		    src=document.getElementById('txtemail').value;
			//var emailReg = "^[\\w-_\.+]*[\\w-_\.]\@([\\w]+\\.)+[\\w]+[\\w]$";
	        var emailReg=".+@.+\\.[a-z]+";
            var regex = new RegExp(emailReg);			
          
			if(!regex.test(src))
			{
				alert("Please Enter valid Email ID");			
				return false;		
			}
		
	    }
		
		else if(document.getElementById('txtphone').value=="")
		{
			alert("Please Enter Your  Phone Number");
			document.getElementById('txtphone').focus();
			return false;
		}	
		else if(document.getElementById('txtmsg').value=="")
		{
			alert("Please Enter Your  Message");
			document.getElementById('txtmsg').focus();
			return false;
		}
		else
	return true;
	

}