/*
Simple Image Trail script- By JavaScriptKit.com
Visit http://www.javascriptkit.com for this script and more
http://www.aogowo.com/
*/

var offsetfrommouse=[9,19]; //image x,y offsets from cursor position in pixels. Enter 0,0 for no offset
var displayduration=0; //duration in seconds image should remain visible. 0 for always.

var timer;

function gettrailobj(){
if (document.getElementById)
return document.getElementById("preview_div").style
}


function gettrailobjnostyle(){
if (document.getElementById)
return document.getElementById("preview_div")
}

function truebody(){
return (!window.opera && document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}


function hidetrail(){	
	gettrailobj().display= "none";
	document.onmousemove=""
	gettrailobj().left="-1000px"
	clearTimeout(timer);
}

function showtrail(title){
	t = title
	timer = setTimeout("show(t);",50);
}
function show(title){
 
    var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth - offsetfrommouse[0]
	var docheight=document.all? Math.min(truebody().scrollHeight, truebody().clientHeight) : Math.min(window.innerHeight)

	if( (navigator.userAgent.indexOf("Konqueror")==-1  || navigator.userAgent.indexOf("Firefox")!=-1 || (navigator.userAgent.indexOf("Opera")==-1 && navigator.appVersion.indexOf("MSIE")!=-1)) && (docwidth>650 && docheight>500)) {

		document.onmousemove=followmouse; 

    	newHTML = '<div class="preview">'+title+'</span></div>';

		gettrailobjnostyle().innerHTML = newHTML;
		gettrailobj().display="block";
	}
}

function followmouse(e){

	var xcoord=offsetfrommouse[0]
	var ycoord=offsetfrommouse[1]

	var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth-15
	var docheight=document.all? Math.min(truebody().scrollHeight, truebody().clientHeight) : Math.min(window.innerHeight)

	if (typeof e != "undefined"){

			xcoord += e.pageX;
			ycoord += e.pageY;

	} else if (typeof window.event != "undefined"){

			xcoord += truebody().scrollLeft+event.clientX
			ycoord += truebody().scrollTop + event.clientY;

	}
	gettrailobj().left=xcoord+"px"
	gettrailobj().top=ycoord+"px"

}