function changeLogin(lNumber){
	for(var i = 1; i <= 5; i++){
		var tab = document.getElementById("login_tab" + i);
		var content = document.getElementById("login_content" + i);
		
		if(i == lNumber){
			tab.className = "login_tab_selected";
			content.style.display = "block";
		}
		else{
			tab.className = "login_tab";
			content.style.display = "none";
		}
	}
}