function email(recipient,email,host,subject){
	
	if (subject == "") {
	document.write("<a href=" + "mail" + "to:" + email + "@" + host+ ">" + recipient + "</a>");
	}
	else{
		document.write("<a href=" + "mail" + "to:" + email + "@" + host+ "?Subject=" + subject + ">" + recipient + "</a>");
	}
}