// JavaScript Document

function overTab(tab){
	document.images[tab].src="images/"+tab+"_over.jpg";
}

function offTab(tab){
	document.images[tab].src="images/"+tab+".jpg";
}

function overBut(num){
	document.images['blk'+num].src="images/block3.jpg";
}
function offBut(num){
	document.images['blk'+num].src="images/block1.jpg";
}


var slideNum = 14;
var curSlide = 0;
var subScrn = false;

function slideFwd(){
	if(++curSlide<=slideNum){
		document.images['view'].src="images/slide"+curSlide+".jpg";
	}
	else{
		document.images['view'].src=defaultImg;
		curSlide=0;
	}
}

function slideRev(){
	if(curSlide==1||subScrn==true){
		document.images['view'].src=defaultImg;
		curSlide=0;
		subScrn=false;
	}
	else if(curSlide > 1){
		document.images['view'].src="images/slide"+ --curSlide +".jpg";
	}
}


function simplePreload()
{ 
  var args = simplePreload.arguments;
  d.imageArray = new Array(args.length);
  for(var i=0; i<args.length; i++)
  {
    document.imageArray[i] = new Image;
    document.imageArray[i].src = args[i];
  }
}

simplePreload('images/barWho_over.jpg','images/barWhatDo_over.jpg','images/barWhatDone_over.jpg','images/barWhat_over.jpg','images/barHow_over.jpg','images/barHome_over.jpg','images/block1.jpg','images/block3.jpg');


function butOver(num){

		document.images[eval("'"+butName+num+"'")].src="images/buttons/"+butName+num+"_over.jpg";

}
function butOut(num){

		document.images[eval("'"+butName+num+"'")].src="images/buttons/"+butName+num+".jpg";

}
function butPress(num){

		document.images['view'].src="images/screens/"+butName+num+".jpg";
		subScrn=true;

}