/*
Simple Image Trail script- By JavaScriptKit.com
Visit http://www.javascriptkit.com for this script and more
This notice must stay intact
*/

var offsetfrommouse=[15,25]; //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 defaultimageheight = 40;	// maximum image size.
var defaultimagewidth = 40;	// maximum image size.

var timer;

var mouse = false;

        // ================================================
		isDOM=(document.getElementById)?true:false
        isOpera=(window.opera)?true:false
        isOpera5=isOpera && isDOM
        isOpera6=(isOpera5 && window.print)?true:false
        isMSIE=isIE=(document.all && document.all.item && !isOpera)
        isNC=navigator.appName=="Netscape"
        isNC4=isNC && !isDOM
        isNC6=isMozilla=isNC && isDOM
        
		var mousex = 0
        var mousey = 0
        if(isNC4) document.captureEvents(Event.MOUSEMOVE)
        if(isMSIE){
         document.onmousemove=function(){
         mousex = event.clientX+document.body.scrollLeft
         mousey = event.clientY+document.body.scrollTop
         return true
         }
        }else if(isOpera){
          document.onmousemove=function(){
          mousex=event.clientX
          mousey=event.clientY
          return true
          }
        }else if(isNC){
                document.onmousemove=function(e){
                mousex = e.pageX
                mousey = e.pageY
                return true
              }  
         }
		//=================================================



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="-500px"
	clearTimeout(timer);
}

function showtrail(imagename,title,width,height){
	i = imagename
	t = title
	w = width
	h = height
	timer = setTimeout("show('"+i+"',t,w,h);",0);
}
function show(imagename,title,width,height){
 
    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)) {
		( width == 0 ) ? width = defaultimagewidth: '';
		( height == 0 ) ? height = defaultimageheight: '';
			
		width+=30
		height+=55
		defaultimageheight = height
		defaultimagewidth = width
        
		mouse = document.onmousemove = followmouse
         
		/*if (mouse)
		{
		   gettrailobj().left = 10;
	       gettrailobj().top = 10;
		   //alert ("сцуко!")
		   mouse = false;
		}*/
		

		
		newHTML = '<div class="border_preview" style="width:'+  width +'px;height:'+ height +'px"><div id="loader_container"><div id="loader"><div align="center">Loading image...</div><div id="loader_bg"><div id="progress"> </div></div></div></div>';
		//newHTML = newHTML + '<h2 class="title_h2">' + ' '+title + '</h2>'
		
    	newHTML = newHTML + '<div class="preview_temp_load"><img onload="javascript:remove_loading();" src="' + imagename + '" border="0"></div>';
		newHTML = newHTML + '</div>'; 
		
		if(navigator.userAgent.indexOf("MSIE")!=-1 && navigator.userAgent.indexOf("Opera")==-1 ){
			newHTML = newHTML+'<iframe src="about:blank" scrolling="no" frameborder="0" width="'+width+'" height="'+height+'"></iframe>';
		}		

		gettrailobjnostyle().innerHTML = newHTML;
		
		
		if (mouse){
		
		gettrailobj().opacity = 0;
        gettrailobj().filter = 'alpha(opacity=0)';

		gettrailobj().display="block";
		for (var i=0;i<11;i++){
		  setTimeout('setOpacity('+i+')',300*i);
		  }
          mouse = false;
        }

	}
}

function setOpacity(value){
   tr = 10
   gettrailobj().opacity = value/tr;
   gettrailobj().filter = 'alpha(opacity=' + value*tr + ')';
}


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"){
		if (docwidth - e.pageX < defaultimagewidth + 2*offsetfrommouse[0]){
			xcoord = e.pageX - xcoord - defaultimagewidth; // Move to the left side of the cursor
		} else {
			xcoord += e.pageX;
		}
		if (docheight - e.pageY < defaultimageheight + 2*offsetfrommouse[1]){
			ycoord += e.pageY - Math.max(0,(2*offsetfrommouse[1] + defaultimageheight + e.pageY - docheight - truebody().scrollTop));
		} else {
			ycoord += e.pageY;
		}

	} else if (typeof window.event != "undefined"){
		if (docwidth - event.clientX < defaultimagewidth + 2*offsetfrommouse[0]){
			xcoord = event.clientX + truebody().scrollLeft - xcoord - defaultimagewidth; // Move to the left side of the cursor
		} else {
			xcoord += truebody().scrollLeft+event.clientX
		}
		if (docheight - event.clientY < (defaultimageheight + 2*offsetfrommouse[1])){
			ycoord += event.clientY + truebody().scrollTop - Math.max(0,(2*offsetfrommouse[1] + defaultimageheight + event.clientY - docheight));
		} else {
			ycoord += truebody().scrollTop + event.clientY;
		}
	}

	
	gettrailobj().left=xcoord+"px"
	gettrailobj().top=ycoord+"px"
	//alert (gettrailobj().left); 
	
	return true

}