window.onload = function() {
	// png fix (IE 5.5 e 6)
	if (document.all && document.styleSheets && document.styleSheets[0] && document.styleSheets[0].addRule) {
		document.styleSheets[0].addRule('img', 'behavior: url("../includes/iepngfix.htc")');
	}
	
	f_u = document.getElementById('login_user');
	f_p = document.getElementById('login_pass');
	
	if (f_u && f_p) {
		f_u.onfocus = function() { if (this.value == "Username") this.value = ""; }
		f_u.onblur = function() { if (this.value == "") this.value = "Username"; }
		
		f_p.onfocus = function() { if (this.value == "Password") this.value = ""; }
		f_p.onblur = function() { if (this.value == "") this.value = "Password"; }
	}
}