var catfish;

function deploycatfish(){
	catfish = document.getElementById('catfish');
	
	catfishheight = 80;
	catfishoverlap = 20;
	catfishtimeout = setTimeout(startcatfish, 2000);
}

function startcatfish(){
	catfishposition = 0;
	catfishtimeout = setInterval(positioncatfish, 25);
}

function positioncatfish(){
	catfishposition += 10;
	catfish.style.marginBottom = '-' + (((100 - catfishposition) / 100) * catfishheight) + 'px';
	if (catfishposition >= 100){
		clearTimeout(catfishtimeout);
		catfishtimeout = setTimeout(finishcatfish, 1);
	}
}

function finishcatfish(){
	catfish.style.marginBottom = '0';	
	document.body.parentNode.style.paddingBottom = (catfishheight - catfishoverlap) +'px';	
}

addLoadEvent(deploycatfish);