function MenuMove(action, id) 
{
    img =document.getElementById(id);
    
    if(action==0)
        img.className="button";
    if(action==1)
        img.className="buttonover";
    if(action==2)
        img.className="buttondown";
    if(action==3)
        img.className="buttonsel";
}

function MenuClick(id) 
{
    url =document.getElementById(id).href;
    location=url;    
}

function OpenScreenshot(filename)
{
    win = window.open(filename,null,"Width=1070,Height=820");
    win.focus();
}

function ScrollThumbs(id)
{
    maximages=20;
    arrow=document.getElementById(id);
    if(id=="la")
    {
        val = document.getElementById("th1").src;
        pos = val.indexOf("t.jpg",0);
        posDirectory = val.indexOf("screenshots/",0);
        if(val.indexOf("/1t.jpg",0)<0)
        {
            imagenumber = val.substr(posDirectory+12,pos-(posDirectory+12));            
            imagenumber--;
            newsrcbase = val.substr(0,posDirectory+12);
            for(i=0;i<4;i++)
            {
                id='th'+(i+1);                
                newsrc = newsrcbase+imagenumber;
                newsrc += "t.jpg";                
                document.getElementById(id).src=newsrc;
                imagenumber++;          
            }
            if(imagenumber<=maximages)
                document.getElementById("ra").src="images/rightarrow.jpg";
            else
                document.getElementById("ra").src="images/rightarrowg.jpg";                
            if(imagenumber<=5)
                document.getElementById("la").src="images/leftarrowg.jpg";
            else
                document.getElementById("la").src="images/leftarrow.jpg";
        }        
    }
    else
    {
        val = document.getElementById("th1").src;
        pos = val.indexOf("t.jpg",0);
        posDirectory = val.indexOf("screenshots/",0);
        teststring="/"+(maximages-3)+"t.jpg";        
        if(val.indexOf(teststring,0)<=0)
        {
            imagenumber = val.substr(posDirectory+12,pos-(posDirectory+12));            
            imagenumber++;
            newsrcbase = val.substr(0,posDirectory+12);
            for(i=0;i<4;i++)
            {
                id='th'+(i+1);
                newsrc = newsrcbase+imagenumber;
                newsrc += "t.jpg";                
                document.getElementById(id).src=newsrc; 
                imagenumber++;                
            }
            if(imagenumber<=maximages)
                document.getElementById("ra").src="images/rightarrow.jpg";
            else
                document.getElementById("ra").src="images/rightarrowg.jpg";
            if(imagenumber<=5)
                document.getElementById("la").src="images/leftarrowg.jpg";
            else
                document.getElementById("la").src="images/leftarrow.jpg";
        }
    }
}

function DisplayScreenshot(id)
{
    val = document.getElementById(id).src;
    pos = val.indexOf("t.jpg",0);
    posDirectory = val.indexOf("screenshots/",0);
    imagenumber = val.substr(posDirectory+12,pos-(posDirectory+12));            
    newsrcbase = val.substr(0,posDirectory+12);
    newsrc = newsrcbase+imagenumber;
    newsrc += ".jpg";                
    document.getElementById("image").src=newsrc;             
}
function NextImage(id)
{
    maximages=20;        
    val = document.getElementById("image").src;
    pos = val.indexOf(".jpg",0);
    posDirectory = val.indexOf("screenshots/",0);
    imagenumber = val.substr(posDirectory+12,pos-(posDirectory+12));            
    imagenumber++;
    if(imagenumber>maximages)
        imagenumber=1;
    newsrcbase = val.substr(0,posDirectory+12);
    newsrc = newsrcbase+imagenumber;
    newsrc += ".jpg";                
    document.getElementById("image").src=newsrc;                 
}