// Contact Form
function validate(f) 
	{		
	  if (f.estimate_on.value=="") {
        alert("Please add your project type!");
        f.estimate_on.focus();
        return false;
        }  
	  if (f.name.value=="") {
        alert("Please add your name!");
        f.name.focus();
        return false;
        }   
	  if (f.city.value=="") {
        alert("Please add your city!");
        f.city.focus();
        return false;
        }   
	  if (f.state.value=="") {
        alert("Please add your state!");
        f.state.focus();
        return false;
        }   
	  if (f.zip.value=="") {
        alert("Please add your zip!");
        f.zip.focus();
        return false;
        }    
		
	    charset=new RegExp("^[^.]+(\.[^.]+)*@([^.]+[.])+[a-z]{2,3}$");
      if (!charset.test(f.email.value))
         {
         window.alert("Please input valid email address!");
         f.email.focus();
         return false;
         }
	  if (f.comments.value=="") {
        alert("Please write us something!");
        f.comments.focus();
        return false;
         }
	  if (f.user_code.value=="") {
        alert("Please write the validation code!");
        f.user_code.focus();
        return false;
         }

return true; 
}