function isvalid()
{
	if (document.getElementById('name').value.replace(/\s/g,'')=="")
	{
	  alert("Please enter your name");
	  document.getElementById('name').focus();
	  return false;
	}
	
	if (document.getElementById('telephone').value.replace(/\s/g,'')=="")
	{
	  alert("Please enter your phone number");
	  document.getElementById('telephone').focus();
	  return false;
	}
	 else if (!/^\+?[\d-]+$/.test(document.getElementById('telephone').value))
	 {
		alert("Invalid telephone");
	  document.getElementById('telephone').focus();
	  return false; 
	 }
	
	
	if (document.getElementById('mobile').value.replace(/\s/g,'')=="")
	{
	  alert("Please enter your mobile number");
	  document.getElementById('mobile').focus();
	  return false;
	}
	  else if (!/^\+?[\d-]+$/.test(document.getElementById('mobile').value))
	 {
		alert("Invalid mobile number");
	  document.getElementById('mobile').focus();
	  return false; 
	 }
	 
	 
	 
	if(document.getElementById('email').value.replace(/\s/g,'')=="")
		{
			alert("Please enter your primary email.");
			document.getElementById('email').focus();
			return false;
		}
		else if (!/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,4})+$/.test(document.getElementById('email').value))
		{
			alert("Please enter a valid email address.")
			document.getElementById('email').focus();
			return false;
		}
	
	if (document.getElementById('remarks').value.replace(/\s/g,'')=="")
	{
	  alert("Please enter your remarks");
	  document.getElementById('remarks').focus();
	  return false;
	}
	
	
	
return true;
	
}