function mb_login(){

	var t_stop = false;
	var c_index = 1;
	var t_content = '';
	var t_result = -1;

	while(t_result == -1){
	
		t_content =  document.getElementById('left').getElementsByTagName('div')[c_index].innerHTML;
		t_result = t_content.search(/>Logg inn<.+/);
		
		if(t_result != -1){

			if(document.getElementById('left').getElementsByTagName('div')[c_index].style.display == 'none' || document.getElementById('left').getElementsByTagName('div')[c_index].style.display == ''){
				document.getElementById('left').getElementsByTagName('div')[c_index].style.display = 'block';
			}
			else{
				document.getElementById('left').getElementsByTagName('div')[c_index].style.display = 'none';
			}
		
		}
		
		c_index++;
	}

}