function desk(src,id,row){
   // alert(id);
    //alert(src);
    //var last=src;
    //alert(row);
    
   // var test=src.split(".jpg");
    //src=test[0];
    document.getElementById("left_top").style.height=600+"px";
    var back=parseInt(id)-1;
    if(back<1)back=row;
    var backsrc=document.getElementById(back).src;
    var ar2=backsrc.split("foto-gall/s");
    var backsrc=ar2[1].split(".");
    var next=parseInt(id)+1;
    if(next>row)next=1;
    var nextsrc=document.getElementById(next).src;
    var ar=nextsrc.split("foto-gall/s");
    var nextsrc=ar[1].split(".");
    var last=document.getElementById("key").value;
    if(last!=""){
    document.getElementById(last).style.opacity=1;
    document.getElementById(last).style.filter="alpha(opacity="+100+")";
    }
    document.getElementById("key").value=id;
    document.getElementById("left_top").innerHTML='<table align="left" height="600" style="position:relative;left:-4px;"><td valign="middle"><span style="cursor:pointer;position:absolute;left:50px;z-index:2" onclick="desk('+backsrc[0]+','+back+','+row+' )"> <img src="foto/left.jpg"> </span></td><td><img src="foto-gall/'+src+'.jpg" width="770" style="position:relative;" /></td><td valign="middle"> <span style="cursor:pointer;position:absolute;right:50px;z-index:2;" onclick="desk('+nextsrc[0]+','+next+','+row+' )"> <img src="foto/right.jpg"> </span> </td></table>';
    document.getElementById(id).style.opacity=0.3;
    document.getElementById(id).style.filter="alpha(opacity="+30+")";
}