function validateLoginForm(){
	if(document.login.username.value == ""){
		alert("Please input your username")
		return false
	}
	else if(document.login.password.value == ""){
		alert("Please input your password")
		return false
	}
	else{
		return true
	}
}

function validateUserForm(){
	if(document.user.username.value == ""){
		alert("Please input a username")
		return false
	}
	else if(document.user.email.value == ""){
		alert("Please input a email adress")
		return false
	}
	else if(document.user.newpassword.value != "" && document.user.newpassword.value != document.user.confirmpassword.value){
		alert("The passwords don't match")
		return false
	}
	else{
		return true
	}
}

function validateAddUserForm(){
	if(document.user.username.value == ""){
		alert("Please input a username")
		return false
	}
	else if(document.user.email.value == ""){
		alert("Please input a email adress")
		return false
	}
	else if(document.user.password.value == ""){
		alert("Please input a password")
		return false
	}
	else if(document.user.password.value != document.user.confirmpassword.value){
		alert("The passwords don't match")
		return false
	}
	else{
		return true
	}
}

function validateLogForm(){
	if(document.log.message.value == ""){
		alert("Please input a message")
		return false
	}
	else if(document.log.message.value.length > 500){
		alert("Message too long, a maximum number of 500 characters is allowed")
		return false
	}
	else{
		return true
	}
}

function validateCategoriesForm(){
	if(document.categories.name.value == ""){
		alert("Please input a name")
		return false
	}
	else{
		return true
	}
}

function validateTweaksForm(){
	if(document.tweaks.name.value == ""){
		alert("Please input a name")
		return false
	}
	else if(document.tweaks.code.value == ""){
		alert("Please input some code")
		return false
	}
	else if(document.tweaks.code.value.length > 1500){
		alert("Code too long, a maximum number of 1500 characters is allowed")
		return false
	}
	else{
		return true
	}
}

function validatePasswordForm(){
	if(document.password.newpassword.value == ""){
		alert("Please input a password")
		return false
	}
	else if(document.password.newpassword.value != document.password.confirmpassword.value){
		alert("The passwords don't match")
		return false
	}
	else{
		return true
	}
}

function confirmWindow(){
	c = confirm("Are you sure?")
	
	if(c){
		return true
	}
	else{
		return false
	}
}