// JavaScript Document

function pruefen()
{
		
		if(document.question.first_name.value == "")
	   {
                alert("Please give your first name.");
                document.question.first_name.focus();
                return false;
        }
		
        if(document.question.last_name.value == "")
        {
                alert("Please give your Surname.");
                document.question.last_name.focus();
                return false;
        }
        
        if(document.question.email.value.indexOf('@') == -1 || document.question.email.value.indexOf('.') == -1)
        {
                alert("Please give the correct Email. ;-)");
                document.question.email.focus();
                return false;
        }
		if(document.question.land.value == "")
	   {
                alert("Please select your country.");
                document.question.land.focus();
                return false;
        }	 
}