function checkLogin(){

var username = document.getElementById("user");
var usernamewarn = document.getElementById("usernamewarn");
var pass = document.getElementById("pass");
var passwarn = document.getElementById("passwarn");

if(username.value == ""){
usernamewarn.innerHTML = "Please enter your username";
return false;
}else if(pass.value == ""){
usernamewarn.innerHTML = "";
passwarn.innerHTML = "Please enter your password";
return false;
}else{
return true;
}
}

function hiderecrws(){

var box = document.getElementById("recordresults");
var link = document.getElementById("showhiderecres");

if(link.innerHTML == "Show"){

link.innerHTML = "Hide";
box.style.display = "inline";

}else if(link.innerHTML == "Hide"){

link.innerHTML = "Show";
box.style.display = "none";

}}

var tab1 = document.getElementById("tab1");
var tab2 = document.getElementById("tab2");
var tab3 = document.getElementById("tab3");
var tab4 = document.getElementById("tab4");
var message = document.getElementById("message");
function changeview (num, petname){
for(x=1;x<5;x++){
if(num == x){
document.getElementById("tab"+x).src = "images/window/"+x+"activetab.gif";
}else{
document.getElementById("tab"+x).src = "images/window/"+x+"inactivetab.gif";
}
if(num == 1){
document.getElementById("message").innerHTML = "See what "+petname+" is currently";
document.getElementById("maintextarea").innerHTML = document.getElementById(petname+".current").innerHTML;
}else if(num == 2){
document.getElementById("message").innerHTML = "See the last few zaps";
document.getElementById("maintextarea").innerHTML = document.getElementById(petname+".recent").innerHTML;
}else if(num == 3){
document.getElementById("message").innerHTML = "See some general statistics from "+petname+"'s zaps";
document.getElementById("maintextarea").innerHTML = document.getElementById(petname+".stats").innerHTML;
}else if(num == 4){
document.getElementById("message").innerHTML = "See how the lab has affected "+petname+"'s stats";
document.getElementById("maintextarea").innerHTML = document.getElementById(petname+".totals").innerHTML;
}
}}

function shrink(){

if(document.getElementById("shrink1").style.display != "none"){

document.getElementById("shrink1").style.display = "none";
document.getElementById("shrink2").style.display = "none";
document.getElementById("shrink3").style.display = "none";
document.getElementById("shrink4").style.display = "none";
document.getElementById("shrink5").style.display = "none";


}else{

document.getElementById("shrink1").style.display = "";
document.getElementById("shrink2").style.display = "";
document.getElementById("shrink3").style.display = "";
document.getElementById("shrink4").style.display = "";
document.getElementById("shrink5").style.display = "";



}}

function sidechangeview(box){
var id = 'side'+box;

if(document.getElementById(id).style.display == "none"){

document.getElementById(id).style.display = "";

}else{

document.getElementById(id).style.display = "none";

}
}

function recordshowselects(changetype){

document.getElementById('operator').style.display = "none";
document.getElementById('value').style.display = "none";
document.getElementById('statvalue').style.display = "none";
document.getElementById('speciesvalue').style.display = "none";
document.getElementById('colourvalue').style.display = "none";
document.getElementById('speccolourvalue').style.display = "none";

if(changetype == 'species'){

document.getElementById('value').style.display = "";
document.getElementById('speciesvalue').style.display = "";
document.getElementById('speccolourvalue').style.display = "";

}else if(changetype == 'colour'){

document.getElementById('value').style.display = "";
document.getElementById('colourvalue').style.display = "";

}else{

document.getElementById('operator').style.display = "";
document.getElementById('value').style.display = "";
document.getElementById('statvalue').style.display = "";

}

}