function email(ahost,auser) {
	window.document.location.href = "mailto:"+auser+"@"+ahost;
}

function change(imageName,imageSrc){
	document.getElementById(imageName).src = imageSrc;
	document.getElementById(imageName).style.display = '';
}

// validate login
function validateLogin() {
	if(document.loginfrm.username.value == ""){
		alert("Please enter a username");
		document.loginfrm.username.focus();
		return false
	} else
	if(document.loginfrm.username.value == "username" ){
		alert("Please enter a proper username");
		document.loginfrm.username.focus();
		return false
	} else {
		return true
	}
}