function form_type(ftype) {
	var params = "ftype=" + ftype;
	var myAjax = new Ajax.Updater('addcorr','getform.php',{method: 'post', parameters: params, onCreate: setSpinner("addcorr")});
}

function title_search() {
	var params = "titleq=" + document.getElementById("titleq").value;
	var myAjax = new Ajax.Updater('exhib_info','getexhibs.php',{method: 'post', parameters: params, onCreate: setSpinner("exhib_info")});
}

function get_exhib(exhib) {
	var params = "enum=" + exhib.options[exhib.selectedIndex].value;
	var myAjax = new Ajax.Updater('corr_form','getexhib_info.php',{method: 'post', parameters: params, onCreate: setSpinner("corr_form")});
}

function setSpinner(spinnum) {
	document.getElementById(spinnum).innerHTML="<p align=\"center\"><img src=\"images/spinning_gear.gif\" alt=\"\" /></p>";
}

function form_check(form) {
	if (form.syear.value.length != 4 && form.syear.value != "?") {
		alert ("Please use the four-digit representation for the year");
		form.syear.focus();
		return false;
	}
	else if (form.eyear.value.length != 4 && form.eyear.value != "?") {
		alert ("Please use the four-digit representation for the year");
		form.eyear.focus();
		return false;
	}
	else
		return true;
}

function corr_this(div_id) {
	var params = "divid=" + div_id;
	var myAjax = new Ajax.Updater(div_id,'corr_this.php',{method: 'post', parameters: params, onCreate: setSpinner(div_id)});
}

function corr_step2(enumber,ctype) {
	var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	var corrname = "name" + enumber;
	var corremail = "email" + enumber;
	var corrtext = "addcorr" + enumber;
	if (document.getElementById(corrname).value == "") {
		alert("You must provide your name");
		document.getElementById(corrname).focus();
	}
	else if (document.getElementById(corremail).value == "") {
		alert("You must provide a valid email address");
		document.getElementById(corrname).focus();
	}
	else if (!filter.test(document.getElementById(corremail).value)) {
		alert("You must provide a valid email address");
		document.getElementById(corremail).focus();
	}
	else if (document.getElementById(corrtext).value == "") {
		alert("You must provide an addition/correction");
		document.getElementById(corrtext).focus();
	}
	else {
		if (ctype == 0)
			var div_id = "exhib" + enumber;
		else
			var div_id = "corr_form";
		var params = "enum=" + enumber + "&corrname=" + document.getElementById(corrname).value + "&corremail=" + document.getElementById(corremail).value + "&corrtext=" + document.getElementById(corrtext).value;
		var myAjax = new Ajax.Updater(div_id,'corr_this.php',{method: 'post', parameters: params, onCreate: setSpinner(div_id)});
	}
}

function form_check2(form2) {
	if (form2.correction.value == "") {
		alert("Please input your correction for this entry");
		form2.correction.focus();
		return false;
	}
	else
		return true;
}

function numbersonly(e, decimal) {
	var key;
	var keychar;

	if (window.event) {
	   key = window.event.keyCode;
	}
	else if (e) {
	   key = e.which;
	}
	else {
	   return true;
	}
	keychar = String.fromCharCode(key);
	
	if ((key==null) || (key==0) || (key==8) ||  (key==63) || (key==13) || (key==27) ) {
	   return true;
	}
	else if ((("0123456789").indexOf(keychar) > -1)) {
	   return true;
	}
	else
	   return false;
}

function entersub(e, decimal) {
	var key;
	var keychar;

	if (window.event) {
	   key = window.event.keyCode;
	}
	else if (e) {
	   key = e.which;
	}
	keychar = String.fromCharCode(key);
	
	if (key==13) {
	   title_search();
	}
}

function add_form() {
	var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (document.getElementById("name").value == "") {
		alert("You must provide your name");
		document.getElementById("name").focus();
	}
	else if (document.getElementById("email").value == "") {
		alert("You must provide a valid email address");
		document.getElementById("email").focus();
	}
	else if (!filter.test(document.getElementById("email").value)) {
		alert("You must provide a valid email address");
		document.getElementById("email").focus();
	}
	else if ((document.getElementById("title").value == "") && (document.getElementById("artist").value == "")) {
		alert("You must provide a title or artist(s) for the exhibition");
		document.getElementById("title").focus();
	}
	else if (document.getElementById("syear2").value == "") {
		alert("You must provide a start year for the exhibition");
		document.getElementById("syear").focus();
	}
	else if (document.getElementById("city").value == "") {
		alert("You must provide a city for the exhibition");
		document.getElementById("title").focus();
	}
	else if (document.getElementById("state2").options[document.getElementById("state2").selectedIndex].value == "") {
		alert("You must provide a state for the exhibition");
		document.getElementById("state2").focus();	
	}
	else {
		var name = document.getElementById("name").value;
		var email = document.getElementById("email").value;
		var sdate = document.getElementById("sdate").options[document.getElementById("sdate").selectedIndex].value;
		var smonth = document.getElementById("smonth").options[document.getElementById("smonth").selectedIndex].value;
		var syear = document.getElementById("syear2").value;
		if (syear == "?")
			syear = -1;
		var edate = document.getElementById("edate").options[document.getElementById("edate").selectedIndex].value;
		var emonth = document.getElementById("emonth").options[document.getElementById("emonth").selectedIndex].value;
		var eyear = document.getElementById("eyear2").value;
		if (eyear == "")
			eyear = 0;
		else if (eyear == "?")
			eyear = -1;
		var title = encodeURIComponent(document.getElementById("title").value);
		var artist = encodeURIComponent(document.getElementById("artist").value);
		var venue = encodeURIComponent(document.getElementById("venue").value);
		var city = encodeURIComponent(document.getElementById("city").value);
		var state = document.getElementById("state2").options[document.getElementById("state2").selectedIndex].value;
		var organizer = encodeURIComponent(document.getElementById("organizer").value);
		var presenter = encodeURIComponent(document.getElementById("presenter").value);
		var sponsor = encodeURIComponent(document.getElementById("sponsor").value);
		var circulator = encodeURIComponent(document.getElementById("circulator").value);
		var curator = encodeURIComponent(document.getElementById("curator").value);
		var etcetera = encodeURIComponent(document.getElementById("etcetera").value);
		if (document.getElementById("origin1").checked == true)
			origin = 1;
		else if (document.getElementById("origin2").checked == true)
			origin = 2;
		else
			origin = 0;
		var params = "name=" + name + "&email=" + email + "&sdate=" + sdate + "&smonth=" + smonth + "&syear=" + syear + "&edate=" + edate + "&emonth=" + emonth + "&eyear=" + eyear + "&title=" + title + "&artist=" + artist + "&venue=" + venue + "&city=" + city + "&state=" + state + "&organizer=" + organizer + "&presenter=" + presenter + "&sponsor=" + sponsor + "&circulator=" + circulator + "&curator=" + curator + "&etcetera=" + etcetera + "&origin=" + origin;
		var myAjax = new Ajax.Updater('addcorr','chron_submit.php',{method: 'post', parameters: params, onCreate: setSpinner("addcorr")});
	}
}