var ggg = 1.0;
var slope = -1.0;
var delta = 0.01;
var intervalID;

function go() {
	// find browser size in Opera / Netscape 4-6 / Mozilla
	if (window.innerWidth || window.innerHeight) {
		docWidth = window.innerWidth;
		docHeight = window.innerHeight;
	}

	// find browser size in Firefox / IE
	if (document.body.clientWidth || document.body.clientHeight) {
		docWidth = document.body.clientWidth;
		docHeight = document.body.clientHeight;
	}

	r = (Math.floor(Math.random() * 100));
	per = ((((-0.77*r)+100)/100)*1.5);
	document.getElementById('g').style.left = (Math.floor(Math.random() * (docWidth-(2*118*per))))+(118*per);
	document.getElementById('g').style.bottom = r*4; //(Math.floor(Math.random() * 100 ))+150;
	document.getElementById('g').style.visibility = 'visible';
	document.getElementById('gg').style.width = 118 * per;
	document.getElementById('gg').style.height = 245 * per;
	//opac();
	intervalID = setInterval(opac, 25);
}

function opac() {

	var objToFade = document.getElementById('gg'); //gg

	if ( slope < 0 ) {
		ggg = ggg - delta;
	} else {
		ggg = ggg + delta;
	}
	if ((ggg > 1.0) || (ggg < 0.9)) {
		slope = slope * -1;
	}
	if(typeof objToFade.style.opacity == "string") {
		objToFade.style.opacity = ggg * 1.0;
	} else {
		document.getElementById('main').filters.alpha.opacity = ggg * 100;
	}



/*
	var objToFade = document.getElementById('main'); // gg
	if(typeof objToFade.style.opacity == "string") {
		objToFade.style.opacity = 0.5;
	} else {
		document.getElementById('gg').filters.alpha.opacity = 50;
	}
	//document.getElementById('gg').style.opacity = parseFloat(ggg);
	//alert(ggg);
*/
}