std undefined

d e sa att jag har en bild, och da man for musen over bilden sa skall en pratbubbla dyka upp detta mha div, men nar jag laddar sidan sa far jag felmeddelandet att std is undefined... nar jag klickar pa fortsatta kora koden anda sa fungerar det...

det ar har den klagar:

var hideassdesc=0;
var assstatus="";
var keepassmenu = 0;
var keepassprompt = 1;
var keepasshelp = 0;
var comefirst = 20000;

function assinit() {
  if (assstatus != ""){
	return;
  }
  window.setTimeout("if ( assstatus=='') { assstatus='bubblepromt';std.showLayer('bubbleprompt'); }",comefirst);
}

function showassdescription() {
  if ((assstatus != "")&&(assstatus != "bubblehelptext")){
	return;
  }
  keepassprompt = 0;
  hideassdesc = 0;
  hideass();
  if (assstatus != "bubblemenu"){
	assstatus="bubbledescription";
  }
  std.showLayer(assstatus);  
}

function hideassdescription() {
  if (assstatus != "bubbledescription"){
	return;
  }
  hideassdesc = 1;
  window.setTimeout("if (hideassdesc) {std.hideLayer('bubbledescription');assstatus='';}",8000);
}

function showasshelptext() {
  std.hideLayer("bubbleprompt");
  std.hideLayer("bubbledescription");
  std.hideLayer("bubblemenu");
  assstatus="bubblehelptext";
  std.showLayer(assstatus);  
  keepasshelp = 1;
}

function hideasshelptext() {
  if (assstatus != "bubblehelptext"){
	return;
  }
  keepasshelp=0;
  window.setTimeout("if ((assstatus == 'bubblehelptext')&&(!keepasshelp)) {std.hideLayer('bubblehelptext');assstatus='';}",8000);
}

function showassmenu() {
  keepassprompt = 0;
  keepassmenu = 1;
  hideass();
  assstatus="bubblemenu";
  std.showLayer(assstatus);  
  keepassmenu = 0;
  window.setTimeout("if (assstatus=='bubblemenu') {std.hideLayer('bubblemenu');assstatus='';}",8000);
}

function hideass() {  
  if (!keepassprompt) {
    std.hideLayer("bubbleprompt");
  }
  std.hideLayer("bubbledescription");
  if (keepassmenu){
	  keepassmenu = 0;
  }else {
	  std.hideLayer("bubblemenu");
  }
  std.hideLayer("bubblehelptext");
  assstatus="";
}

function hideallass() {  
  std.hideLayer("bubbleprompt");
  std.hideLayer("bubbledescription");
  std.hideLayer("bubblemenu");
  std.hideLayer("bubblehelptext");
  keepassmenu=0;
  keepassprompt=0;
  assstatus="";
}

std.loadEvalString += "assinit();std.mouseListener.attachUp('hideallass');";

Var sätts std objektet?