// dreamlettes.net
var dom = document.getElementById;
var ie = document.all;
function capEv(event,method){
  this[event] = method;
  };
  function relEv(event){
    this[event] = null;
    };
    function getYs(e){
      return ie ? event.clientY : e.pageY;
      }
function getEl(nm){
  var el = dom ? document.getElementById(nm) : ie ? document.all[nm] : false;
  el.getTop = function(){
    return parseInt(el.offsetTop) || 0};
    el.setTop = function(y){el.style.top = y+"px"};
    el.getHeight = function(){
      return el.offsetHeight;
      };
    el.getClipHeight = function(){return el.offsetHeight};
    el.capEv = capEv; el.relEv = relEv;	return el;
    }
document.capEv = capEv;
document.relEv = relEv;
sObj = function(s, tObj, uObj, dObj, dgObj, hObj, cObj){
	this.s = s;
    var self = this;
    this.tObj = getEl(tObj);
    this.uObj = getEl(uObj);
    this.dObj = getEl(dObj);
    this.dgObj = getEl(dgObj);
    this.hObj = getEl(hObj);
    this.cObj = getEl(cObj,hObj);
	this.dH = this.dgObj.getHeight();
    this.tH = this.tObj.getHeight();
    this.obj = cObj+"Object";
    eval(this.obj+"=this");
    this.tT = this.dgObj.getTop();
    this.tL = this.tH-this.dH; this.tB = this.tT+this.tL;
    this.hH = this.hObj.getClipHeight();
    this.cH = this.cObj.getHeight();
    this.cL = this.cH-this.hH;
    this.sL = this.tL/this.cL;
    this.sT = null;
	this.tObj.capEv("onmousedown", function(e){self.sJmp(e);return false});
    this.uObj.capEv("onmousedown", function(){
      self.scroll(self.s);
    return false
    });
	this.uObj.capEv("onmouseup", function(){self.stSc()});
    this.uObj.capEv("onmouseout", function(){self.stSc()});
    this.dObj.capEv("onmousedown", function(){self.scroll(-self.s);return false});
    this.dObj.capEv("onmouseup", function(){self.stSc()});
	this.dObj.capEv("onmouseout", function(){self.stSc()});
    this.dgObj.capEv("onmousedown", function(e){self.sDg(e);
    return false});
    if(ie) this.dgObj.capEv("ondragstart", function(){return false});
}
sObj.prototype.sDg = function(e){this.dSM = getYs(e); this.dSO = this.dgObj.getTop(); var self = this; document.capEv("onmousemove", function(e){self.drag(e)}); document.capEv("onmouseup", function(){self.stD()});}
sObj.prototype.stD = function(){document.relEv("onmousemove"); document.relEv("onmouseup");}
sObj.prototype.drag = function(e){var curM = getYs(e); var mDiff = curM-this.dSM;var dD = this.dSO+mDiff; var dM = (dD<this.tT) ? this.tT : (dD>this.tB) ? this.tB : dD;this.dgObj.setTop(dM); var cM = -(dM-this.tT)*(1/this.sL);this.cObj.setTop(cM);}
sObj.prototype.scroll = function(s){var cM = this.cObj.getTop()+s; var dM = this.tT-Math.round(this.cObj.getTop()*(this.tL/this.cL));	if(cM > 0)	cM = 0; else if(cM < -this.cL) cM = -this.cL;if(dM < this.tT)	dM = this.tT; else if(dM > this.tB) dM = this.tB;this.cObj.setTop(cM); 	this.dgObj.setTop(dM); 	this.sT = window.setTimeout(this.obj+".scroll("+s+")",25);}
sObj.prototype.stSc = function(){if(this.sT) window.clearTimeout(this.sT); this.sT = null;}
sObj.prototype.sJmp = function(e){	var curM = getYs(e); var dD = curM-(this.dH/2);var dM = (dD<this.tT) ? this.tT : (dD>this.tB) ? this.tB : dD;this.dgObj.setTop(dM); var cM = -(dM-this.tT)*(1/this.sL); this.cObj.setTop(cM);}


window.onload = function(){

two_row = document.getElementById("divContainer"); 
two_row_content_02 = document.getElementById("divContent");
two_row_content = two_row_content_02.offsetHeight;
//two_row_content_pos = two_row_content.indexOf('px');
//two_row_content = two_row_content.substring(0,two_row_content_pos);




if (two_row) {
scroller = new sObj(5,"scroll_space","divUpControl","divDownControl","drag","divContainer","divContent");  

  if (two_row) {     
       if (two_row_content > 302)  {
        
         scrollbalken=document.getElementById("wrapper_scroll");
         scrollbalken.style.visibility = "visible";
		 	}
}
 
 }

}





function verifyCompatibleBrowser(){
    this.ver=navigator.appVersion
    this.dom=document.getElementById?1:0
    this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom)?1:0;
    this.ie4=(document.all && !this.dom)?1:0;
    this.ns5=(this.dom && parseInt(this.ver) >= 5) ?1:0;

    this.ns4=(document.layers && !this.dom)?1:0;
    this.bw=(this.ie5 || this.ie4 || this.ns4 || this.ns5)
    return this
}
bw=new verifyCompatibleBrowser()


function FensterOeffnen (Adresse) {
  MeinFenster = window.open(Adresse, "PopUpFenster", "width=300,height=400,scrollbars=yes");
  MeinFenster.focus();
}