function trim(inputString) {
     	if (typeof inputString != "string") { return inputString; }
 	var retValue = inputString;
   	var ch = retValue.substring(0, 1);
   	while (ch == " ") {
      		retValue = retValue.substring(1, retValue.length);
      		ch = retValue.substring(0, 1);
   		}
   	ch = retValue.substring(retValue.length-1, retValue.length);
   	while (ch == " ") {
      		retValue = retValue.substring(0, retValue.length-1);
      		ch = retValue.substring(retValue.length-1, retValue.length);
   		}
   	while (retValue.indexOf("  ") != -1) {
      		retValue = retValue.substring(0, retValue.indexOf("  ")) + retValue.substring(retValue.indexOf("  ")+1, retValue.length);
   		}
   	return retValue;
	}

function updateClicks(banner) {
	var theUrl = 'index.php?updateClicks='+banner;
	http.open("GET",theUrl,true);
 	http.onreadystatechange = function() {
                if (http.readyState == 4) {
                        if (http.status == 200) { return true; }
                	}
                }
 	http.send(null);
	}
function getHTTPObject() {
  	var xmlhttp;

	/*@cc_on
	@if (@_jscript_version >= 5)
		try { xmlhttp = new ActiveXObject("Msxml2.XMLHTTP"); }
		catch (e) {
			try { xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); }
			catch (E) { xmlhttp = false; }
		}
		@else xmlhttp = false;
  	@end @*/

	if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
		try { xmlhttp = new XMLHttpRequest(); }
		catch (e) { xmlhttp = false; }
		}

	return xmlhttp;
	}

var http = getHTTPObject();

function checksearch ( form ) {
	if (trim(form.criteria.value) == "") {
		form.criteria.focus();
		return false;
		}
	return true;
	}

function checkLogin(form) {
	if (trim(form.username.value) == "") {
		form.username.focus();
		return false;
		}
	if (trim(form.password.value) == "") {
		form.password.focus();
		return false;
		}
	return true;
	}

function checkCreate(form) {
	if (trim(form.usernameBox.value) == "") {
		form.usernameBox.focus();
		return false;
		}
	if (trim(form.email.value) == "") {
		form.email.focus();
		return false;
		}
	if (form.email.value != "") {
	        var email=form.email.value;
	        var check_space = email.indexOf(' ');
	        var check_ast = email.indexOf('@');
	        var check_dot = email.indexOf('.');
	        if ((check_space != -1) || (check_ast == -1) || (check_dot == -1)) {
		         form.email.focus();
		         return false;
		         }
		}
	if (trim(form.passwordBox1.value) == "") {
		form.passwordBox1.focus();
		return false;
		}
	if (trim(form.passwordBox2.value) == "") {
		form.passwordBox2.focus();
		return false;
		}
	if (trim(form.passwordBox1.value) != trim(form.passwordBox2.value)) {
		form.passwordBox1.focus();
		return false;
		}
	return true;
	}

function checkReset(form) {
	if (trim(form.email.value) == "") {
		form.email.focus();
		return false;
		}
	if (form.email.value != "") {
	        var email=form.email.value;
	        var check_space = email.indexOf(' ');
	        var check_ast = email.indexOf('@');
	        var check_dot = email.indexOf('.');
	        if ((check_space != -1) || (check_ast == -1) || (check_dot == -1)) {
		         form.email.focus();
		         return false;
		         }
		}
	return true;
	}

function checkResetVerify(form) {
	if (trim(form.code.value) == "") {
		form.code.focus();
		return false;
		}
	if (trim(form.pwd1.value) == "") {
		form.pwd1.focus();
		return false;
		}
	if (trim(form.pwd2.value) == "") {
		form.pwd2.focus();
		return false;
		}
	if (trim(form.pwd1.value) != trim(form.pwd1.value)) {
		form.pwd1.focus();
		return false;
		}
	return true;
	}

function checkContact(form) {
	if (trim(form.email.value) == "") {
		form.email.focus();
		return false;
		}
	if (form.email.value != "") {
	        var email=form.email.value;
	        var check_space = email.indexOf(' ');
	        var check_ast = email.indexOf('@');
	        var check_dot = email.indexOf('.');
	        if ((check_space != -1) || (check_ast == -1) || (check_dot == -1)) {
		         form.email.focus();
		         return false;
		         }
		}
	if (trim(form.question.value) == "") {
		form.question.focus();
		return false;
		}
	return true;
	}

function checkTell(form) {
	if (trim(form.username.value) == "") {
		form.username.focus();
		return false;
		}
	if (trim(form.password.value) == "") {
		form.password.focus();
		return false;
		}
	return true;
	}