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 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.username.value) == "") {
		form.username.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.password1.value) == "") {
		form.password1.focus();
		return false;
		}
	if (trim(form.password2.value) == "") {
		form.password2.focus();
		return false;
		}
	if (trim(form.password1.value) != trim(form.password2.value)) {
		form.password1.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 checkReview(form) {
	if (trim(form.reviewText.value) == "") {
		form.reviewText.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 checkSubmission(form) {
	if (trim(form.newName.value) == "") {
		form.newName.focus();
		return false;
		}
	if (trim(form.newDescription.value) == "") {
		form.newDescription.focus();
		return false;
		}
	if (form.newEmail.value != "") {
	        var email=form.newEmail.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.newEmail.focus();
		         return false;
		         }
		}
	var selObj = form['newCategory[]'];
	var retVal = false;
	for (var i = 0; i < selObj.length; i++) {
		if (selObj.options[i].selected)	{
			retVal = true;
			}
		}
	if(retVal != true) {
        	return false;
		}
	return true;
	}

function checkEdit(form) {
	if (trim(form.newName.value) == "") {
		form.newName.focus();
		return false;
		}
	if (trim(form.newDescription.value) == "") {
		form.newDescription.focus();
		return false;
		}
	if (form.newEmail.value != "") {
	        var email=form.newEmail.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.newEmail.focus();
		         return false;
		         }
		}
	return true;
	}