function popup(url,name,width,height){

	window.open(url,name,'width='+width+', height='+height);
	
	return false;

}

function check(){
        if ((document.kontakt.lastname.value.length<2)||(document.kontakt.lastname.value=="Lastname")){
            alert("Please enter your lastname.");
            document.kontakt.lastname.value="Lastname";
            document.kontakt.lastname.select();
            document.kontakt.lastname.focus();
            return false;
        }else if((document.kontakt.address.value.length<2)||(document.kontakt.address.value=="Address")){
            alert("Please enter your Address.");
            document.kontakt.address.value="Address";
            document.kontakt.address.select();
            document.kontakt.address.focus();
            return false;           
        }else if((document.kontakt.zip.value.length<2)||(document.kontakt.zip.value=="ZIP")){
            alert("Please enter your ZIP-Code.");
            document.kontakt.zip.value="ZIP";
            document.kontakt.zip.select();
            document.kontakt.zip.focus();
            return false;           
        }else if((document.kontakt.city.value.length<2)||(document.kontakt.city.value=="City")){
            alert("Please enter your city.");
            document.kontakt.city.value="City";
            document.kontakt.city.select();
            document.kontakt.city.focus();
            return false;           
        }else if((document.kontakt.country.value.length<1)||(document.kontakt.country.value=="")){
            alert("Please choose your country");
            document.kontakt.country.focus();
            return false;    
        }else if((document.kontakt.email.value.length<2)||(document.kontakt.email.value=="Email")){
            alert("Please enter your Email.");
            document.kontakt.email.value="Email";
            document.kontakt.email.select();
            document.kontakt.email.focus();
            return false;
        }
    }