//VARS
var imgSwap;

//FUNCTIONS

function initHome(){
	setPositions();
	imgSwap = setInterval(swapImg, 10000);
}

function initLoc(){
	setPositions();
}

function setPositions(){
	var win_w = f_clientWidth();
	var win_h = f_clientHeight();
	if(win_w > 800){
		document.getElementById('main_frame').style.left = ((win_w - 800) / 2) + 'px';
	}else{
		document.getElementById('main_frame').style.left = '0px';
	}
	if(win_h > 768){
		document.getElementById('main_frame').style.height = win_h + 'px';
	}else{
		document.getElementById('main_frame').style.height = '768px';
	}
}

function swapImg(){
	var imgSrc = String(document.getElementById('image').src);
	if(imgSrc.indexOf('gfx/outside.png') != -1){
		document.getElementById('image').src = 'gfx/inside.png';
	}else if(imgSrc.indexOf('gfx/inside.png') != -1){
		document.getElementById('image').src = 'gfx/canteen.png';
	}else if(imgSrc.indexOf('gfx/canteen.png') != -1){
		document.getElementById('image').src = 'gfx/outside.png';
	}
}