function checkContact(){
    if  ( document.estimate.name.value == '' )	{
		alert('Please fill "Name" ');
		document.estimate.name.focus();
		return false;
		}
	else if  ( document.estimate.email.value == '' )	{
		alert('Please fill "Email" ');
		document.estimate.email.focus();
		return false;
		}	
   else if ((document.estimate.email.value.indexOf(".")==-1) || (document.estimate.email.value.indexOf("@")==-1))
       {
         alert('Please correct your email');
         document.estimate.email.focus();
          return false;
        }			
	else if  ( document.estimate.tell.value == '' )	{
		alert('Please fill "Phone" ');
		document.estimate.tell.focus();
		return false;
		}	
	else if  ( document.estimate.description.value == 'NOT_ENTERED' )	{
		alert('Please fill "Description"');
		document.estimate.description.focus();
		return false;
		}		
	
  return true;

}