var ua = navigator.userAgent.toLowerCase();
var divw=0;
var divh=0;

if (document.getElementById || document.all)
	document.write('<div id="imgtrailer" style="position:absolute;visibility:hidden;"></div>')

function gettrailobject()
	{
	if (document.getElementById)
		return document.getElementById("imgtrailer")
	else if (document.all)
		return document.all.trailimagid
	}

function gettrailobj()
	{
	if (document.getElementById)
		return document.getElementById("imgtrailer").style
	else if (document.all)
		return document.all.trailimagid.style
	}

function truebody()
	{
	return (!window.opera && document.compatMode && document.compatMode!="BackCompat" && ua.indexOf('chrome') == -1)||window.opera? document.documentElement : document.body
	}

function trailOff()
	{
	document.onmousemove='';
	gettrailobj().visibility="hidden";
	}

function trailOn(thumbimg,imgtitle,thw,thh) {
  if (ua.indexOf('mac') == -1) {
    gettrailobj().left="-500px";
    divthw = parseInt(thw) + 2;
    gettrailobject().innerHTML = '<div style="background-color: #DAE2E8; layer-background-color: #DAE2E8; border: 1px solid #ADBBCA; padding:10px; width: ' + divthw +'px; "><div style="background-color: #FFFFFF; layer-background-color: #FFFFFF; border: 1px solid #ADBBCA;">'+'<img src="'+thumbimg+'" border="0"><div style="padding:3px; text-align:center">'+imgtitle+'</div></div>';
    gettrailobj().visibility="visible";
    divw = parseInt(thw)+25;
    divh = parseInt(thh)+130;
    document.onmousemove=followmouse;
  }
}

function followmouse(e)
	{
	var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth-15
	var docheight=document.all? Math.min(truebody().scrollHeight, truebody().clientHeight) : Math.min(document.body.offsetHeight, window.innerHeight)
	
	if(typeof e != "undefined")
		{
		if(docwidth < 15+e.pageX+divw)
			xcoord = e.pageX-divw-5;
		else
			xcoord = 15+e.pageX;
		if(docheight < 15+e.pageY+divh)
			ycoord = 15+e.pageY-Math.max(0,(divh + e.pageY - docheight - truebody().scrollTop - 30));
		else
			ycoord = 15+e.pageY;
		}
	else if (typeof window.event != "undefined")
		{
		if(docwidth < 15+truebody().scrollLeft+event.clientX+divw)
			xcoord = truebody().scrollLeft-5+event.clientX-divw;
		else
			xcoord = truebody().scrollLeft+15+event.clientX;
	
		if(docheight < 15+truebody().scrollTop+event.clientY+divh)
			ycoord = 15+truebody().scrollTop+event.clientY-Math.max(0,(divh + event.clientY - docheight - 30));
		else
			ycoord = truebody().scrollTop+15+event.clientY;
		}
		gettrailobj().left=xcoord+"px"
		gettrailobj().top=ycoord+"px"
}

var imgs = new Array();
function getBlock(i,j,pref) {
	if( j > 0 ) {
		if( imgs[i] == undefined ) imgs[i] = 0;
		if( pref == undefined ) pref='';
		
		jQuery('#img_'+pref+i+'_'+imgs[i]).hide(0,function () {
			imgs[i]++;
			if( imgs[i] >= j ) imgs[i] = 0;
			jQuery('#img_'+pref+i+'_'+imgs[i]).show();											   
		});
		
	}
}