function _hover(pfx) {
  this.postfix=pfx;
	this.mX = 0; this.mY = 0;	this.IT = null;	this.HC = null;
  this.all_hovers=new Array();
	this.over_label=false; this.over_tooltip=false; this.over_tooltip_content=false;

  this.ovrtimer=function(F,T) {
    if (isNaN(T)) T=0;
    this.ovr_label=1;
  	this.ovrTimeout=setTimeout(F,T);
  }
  this.outtimer=function(T) {
    clearTimeout(this.ovrTimeout);
    if (isNaN(T)) T=1000;
  	var me=this; setTimeout(function() { if (!me.over_label && !me.over_tooltip && !me.over_tooltip_content) me.out(); },T);
  }
}

_hover.prototype.move = function(e,O) {
  this.IT=O;
  var HC=GE(O.id+this.postfix);
//  if (HC==undefined) return;

/*
  if (HC.parentNode.tagName.toLowerCase()!='body') {
    var l=document.body.getElementsByTagName(HC.tagName);
    for (var i in l) if (l[i].id==HC.id && l[i].parentNode.tagName.toLowerCase()=='body') l[i].parentNode.removeChild(l[i]);
    document.body.appendChild(HC);
  }
*/

  this.HC=HC;

  var dw=screen.width, dh=screen.height;
  if (document.width) dw=document.width-10; else if (document.body.clientWidth) dw=document.body.clientWidth;
  if (O.className) {
    if (O.className.indexOf('hover_move')!=-1) {
      if (e.pageX || e.pageY) { this.mX=e.pageX; this.mY=e.pageY; }
      else if (e.clientX || e.clientY) {
        this.mX=e.clientX+document.documentElement.scrollLeft; this.mY=e.clientY+document.documentElement.scrollTop; 
      }
    } else {
      var mx=(O.className.indexOf('hover_left')==-1?(O.className.indexOf('hover_right')==-1?1/2:1):0);
      var my=(O.className.indexOf('hover_top')==-1?(O.className.indexOf('hover_bottom')==-1?1/2:1):0);
      var P=getPos(O), w=O.offsetWidth, h=O.offsetHeight; this.mX=P[0]+mx*w; this.mY=P[1]+my*h;
    }
  }
  var ax=2, ay=2;
  if (dw/2<this.mX) { this.mX-=this.HC.offsetWidth; ax*=-1; }
  if (dh/2<this.mY) { this.mY-=this.HC.offsetHeight; ay*=-1; }
  this.noout=false;
  if (this.HC!=undefined) {
  if (this.HC.style!=undefined) { this.HC.style.top = (this.mY+ay)+'px'; this.HC.style.left = (this.mX+ax)+'px'; }
  var H=document.body.clientHeight;
  if (this.HC.offsetHeight+this.HC.offsetTop>H)
    this.HC.style.top=(H-this.HC.offsetHeight)+'px';
  }
}

_hover.prototype.set_fix_pos = function(e,O) {
  var hh=this;
//  if (hh.HC==undefined) return;
  hh.over_label=true; if (hh.IT && hh.IT!=this) hh.out();
  if (hh.IT!=this) { hh.move(e,O); }
//  if (hh.HC) {
    addEvent(hh.HC,'mouseover',function() { hh.over_tooltip=true; });
    addEvent(hh.HC,'mouseout',function() { hh.over_tooltip=false; hh.outtimer(); });
//  }
  var children=document.getElementById(O.id+this.postfix).childNodes;
  for (var cn in children) if (children[cn].nodeName=='A') {
    children[cn].onmouseover=function() { hh.over_tooltip_content=true; }
    children[cn].onmouseout=function() { hh.over_tooltip_content=false; hh.outtimer(); }
  }
}

_hover.prototype.init = function(target) {

  if (target!=undefined) this.target=target; else target=this.target; // GEcn() handles undefined values
  var hh=this; var A=GEcn('hover_move',undefined,target).concat(GEcn('hover_click',undefined,target)).concat(GEcn('hover_fix',undefined,target));
	for (var i=0; i<A.length; i++) if (A[i]) {

    
    
    if (!A[i].hover_init) {

      A[i].hover_init=1;

      var hID=A[i].id+this.postfix;

      var H=GE(hID); // new node to use as hover
      if (H && H.parentNode.tagName!='body') {
        if (this.all_hovers[hID]) document.body.removeChild(this.all_hovers[hID]);
        document.body.appendChild(H);
        this.all_hovers[hID]=H;

        if (A[i].className.indexOf('hover_move')!=-1) {
          addEvent(A[i],"mousemove", function(e) { if (hh.IT && hh.IT!=evTarg(e)) hh.out(); hh.move(e,evTarg(e)); });
          addEvent(A[i],"mouseout", function(e) { hh.out(); });
        } else if (A[i].className.indexOf('hover_click')!=-1) {
          addEvent(A[i],"click", function(e) {
            if (evTarg(e)._clicked) { hh.over_label=false; hh.out(); }
            else hh.set_fix_pos(e,evTarg(e));
            evTarg(e)._clicked=!evTarg(e)._clicked;
          });
          addEvent(A[i],"mouseout", function(e) { hh.over_label=false; hh.outtimer(); evTarg(e)._clicked=0; });
        } else if (A[i].className.indexOf('hover_fix')!=-1) {

//          addEvent(A[i],"mouseover", function(e) { hh.ovrObj=evTarg(e); hh.ovrtimer(function() { hh.set_fix_pos(e,hh.ovrObj); },1000); } );
//          addEvent(A[i],"mouseout", function(e) { hh.over_label=false;  hh.outtimer(100); }); //evTarg(e).getAttribute('mout_timeout')
          addEvent(A[i],"mouseover", function(e) { hh.set_fix_pos(e,evTarg(e)); });
          addEvent(A[i],"mouseout", function(e) { hh.over_label=false;  hh.outtimer(); });
        }

        if (A[i].getAttribute('sx_uri')) {
          addEvent(A[i],"mouseover", function(e) { 
            var me=evTarg(e);
            if (!me.sx_loaded) { 
              me.sx_loaded=1; SXreq(me.id+'_hover',me.getAttribute('sx_uri'));
//              alert('SXreq('+me.id+'_hover,'+me.getAttribute('sx_uri')+')');
            }
          });
        }

      }

    }
	}
}



_hover.prototype.out = function() {
  if (this.HC) if (this.HC.style!=undefined) {	this.HC.style.top = '-10000px'; this.HC.style.left = '-10000px'; } this.IT = null;	this.HC = null;
}



var hover = new _hover('_hover');
var hover2 = new _hover('_hover2');





function img_hover(O,uri,t_id) {
  var H=document.createElement('div');
  H.id=t_id;
  H.className='hover1';
  H.innerHTML='<img src="'+uri+'">';
  document.body.appendChild(H);

  var dw=screen.width, dh=screen.height;
  if (document.width) dw=document.width-10; else if (document.body.clientWidth) dw=document.body.clientWidth;

  var mx=0,my=0; var P=getPos(O), w=O.offsetWidth, h=O.offsetHeight, mX=P[0]+mx*w, mY=P[1]+my*h, ax=2, ay=2;
   if (dw/2<this.mX) { this.mX-=H.offsetWidth; ax*=-1; }
   if (dh/2<this.mY) { this.mY-=H.offsetHeight; ay*=-1; }

  if (H!=undefined) {
    if (H.style!=undefined) { H.style.top = (mY+ay)+'px'; H.style.left = (mX+ax)+'px'; }
    var HT=document.body.clientHeight; if (H.offsetHeight+H.offsetTop>HT) H.style.top=(HT-H.offsetHeight)+'px';
  }
}