tcursor=0;
  
/*
 
  $("#tpane<?php echo $scroll_pred;?>").ready(function(){ 
      $("#bn_<?php echo $scroll_pred;?>").css("opacity","0.5");
  if (tcursor<?php echo $scroll_pred;?><=-1*($("#tpane<?php echo $scroll_pred;?>").height()-<?php echo $scroll_vyska;?>)) {
    $("#bd_<?php echo $scroll_pred;?>").css("opacity","0.5")
  }

      
//      alert($("#tpane<?php echo $scroll_pred;?>").height()*1+"/"+<?php echo $scroll_vyska;?>)
//      alert($("#tpane<?php echo $scroll_pred;?>").height()*1)
      if (($("#tpane<?php echo $scroll_pred;?>").height()*1<=<?php echo $scroll_vyska;?>)) {
        if (tlacnic==0) {
//          $("#bd_<?php echo $scroll_pred;?>").css("display","none");
//          $("#bn_<?php echo $scroll_pred;?>").css("display","none");
        }  
      } else {
        tlacnic=1;  
      }  
   });	

 

function tnahoru(div, posun) {
//  alert(posun)
  if (tcursor<?php echo $scroll_pred;?><0) {
    tcursor<?php echo $scroll_pred;?>=tcursor<?php echo $scroll_pred;?>+posun;
    cur=tcursor<?php echo $scroll_pred;?>+"px";
    $("#tpane<?php echo $scroll_pred;?>").animate({top: cur},500);
  }
  
  if (tcursor<?php echo $scroll_pred;?>>=0) {
    $("#bn_<?php echo $scroll_pred;?>").css("opacity","0.5")
  }  
  if (tcursor<?php echo $scroll_pred;?>>-1*($("#tpane<?php echo $scroll_pred;?>").height()-<?php echo $scroll_vyska;?>)) {
    $("#bd_<?php echo $scroll_pred;?>").css("opacity","1")
  }
}

function tdolu<?php echo $scroll_pred;?>(posun) {
  if (tcursor<?php echo $scroll_pred;?>>-1*($("#tpane<?php echo $scroll_pred;?>").height()-<?php echo $scroll_vyska;?>)) {
    tcursor<?php echo $scroll_pred;?>=tcursor<?php echo $scroll_pred;?>-posun;
    cur=tcursor<?php echo $scroll_pred;?>+"px";
    $("#tpane<?php echo $scroll_pred;?>").animate({top: cur},500);
  }  
  if (tcursor<?php echo $scroll_pred;?><0) {
    $("#bn_<?php echo $scroll_pred;?>").css("opacity","1")
  } 
  if (tcursor<?php echo $scroll_pred;?><=-1*($("#tpane<?php echo $scroll_pred;?>").height()-<?php echo $scroll_vyska;?>)) {
    $("#bd_<?php echo $scroll_pred;?>").css("opacity","0.5")
  }
}

*/


function tnahoru(div, posun) {
  
}

function tdolu (div, posun) {
}