function check(element){
	        if(element.name.value == "" || element.name.value == "your name"){
		        alert("Please insert your name!");
                        element.name.focus();
		        return false;
	        }
                if(element.email.value == "" || element.email.value == "you@host.com"){
		        alert("Please provide your email!");
                        element.email.focus();
		        return false;
	        }
                if(!check_email(element.email.value)){
                        alert("Please provide your email in form of: you@host.com")
                        element.email.focus();
		        return false;
                }
               return true;
         }      
function check_email(emailAddress){
        return (emailAddress.indexOf(".") > 3) && (emailAddress.indexOf("@") > 2);
}