function getvars(frm){
	var vars='';
	for(var i=0;i<frm.length;i++){
		if(frm.elements[i].name!=''){
			vars+=(vars==''?'':'&');
			vars+=frm.elements[i].name+'='+escape(frm.elements[i].value);
		}
	}
	return vars;
}

// A rudimentary JavaScript function to handle the login process. 
function login(frm,htrt){
	var vars=getvars(frm);
	if(frm.what.value=="Login"){
		doHttpRequest('form_box',htrt+'/php/login.php',vars); 
	} else if(frm.what.value=="Logged in"){
		doHttpRequest('form_box',htrt+'/php/login-success.php',vars); 
	} else if(frm.what.value=="Not logged in"){
		doHttpRequest('form_box',htrt+'/php/login-failure.php',vars); 
	} else if(frm.what.value=="Retry"){
		doHttpRequest('form_box',htrt+'/php/login.php',vars); 
	} else if(frm.what.value=="Success"){
		return true;
	} 
	return false; 
}
// A similarly simple JavaScript function to handle logging out. 
function logout(){

}