function trim(s) {
	return s.replace(/[ \t]+$/, "").replace(/^[ \t]+/, "");
}

function checkkontakt(f) { 
	if(trim(f.name.value)=="") {
		alert("Please fill in name");
		f.name.focus();
		return(false);
	}
	if(trim(f.email.value)=="") {
		alert("Please fill in email");
		f.email.focus();
		return(false);
	}
	if(f.email.value.indexOf('@')==-1){
		alert("Your email invalid");
		f.email.select();
		return false;
	}
	if(f.email.value.indexOf('.')==-1){
		alert("Your email invalid");
		f.email.select();
		return false;
	}
	if(trim(f.detail.value)=="") {
		alert("Please fill in detail");
		f.detail.focus();
		return(false);
	}
	return(true);
}

function Confirms() {
	if(confirm("Do you want delete?")) {
		return(true);
	}
	return(false);
}