/*JavaScript Document*/
var Compat = {
  addEventHandler: function(element, event, handler) {
    var _tmp, _onevent;
    if (!element || !event )
      return false;
    if (element.addEventListener)    /*DOM-konform*/
      element.addEventListener(event, handler, false);
    else {
      _onevent = 'on'+event;
      if (element.attachEvent)       /*IE*/
        element.attachEvent(_onevent, handler);
      else {                         /*ältere Browser*/
        _tmp = element[_onevent];
        element[_onevent] = typeof _tmp == 'function'
          ? (function() { _tmp(); handler(); })
          : handler;
      }
    }
  },
  removeEventHandler: function (element, event, handler) {
    var _tmp, _onevent;
    if (!element || !event )
      return false;
    if (element.removeEventListener)    /*DOM-konform*/
      element.removeEventListener(event, handler, false);
    else {
      _onevent = 'on'+event;
      if (element.detachEvent)       /*IE*/
        element.detachEvent(_onevent, handler);
      else {                         /*ältere Browser*/
        element[_onevent] = "";
      }
    }
  },
  getTarget: function (event) {
    return typeof event.target == "undefined"
    ? window.event.srcElement
    : event.target;
  },
  clientX: function (event) {
    return window.event ? window.event.clientX : event.clientX;
  },
  clientY: function (event) {
    return window.event ? window.event.clientY : event.clientY;
  },
  stopPropagation: function(event) {
    if (typeof event.target == "undefined")
      window.event.cancelBubble = true;
    else if (event.stopPropagation)
      event.stopPropagation();
  },
  /*von Luk hinzugefügt*/
  $Id: function (el_id) {
		return document.getElementById(el_id);
  },
  $Tag: function (el_tag) {
		return document.getElementsByTagName(el_tag);
  },
  $Name: function (el_name) {
		return document.getElementsByName(el_name);
  },
  $Class: function (el_class) {
		var all_obj, ret_obj = new Array(), j = 0, teststr;
    if(document.all) all_obj = document.all;
    else if(document.getElementsByTagName && !document.all) all_obj = document.getElementsByTagName("*");
    for(i = 0; i < all_obj.length; i++) {
    	if(all_obj[i].className.indexOf(el_class) != -1){
            teststr = "," + all_obj[i].className.split(" ").join(",") + ",";
            if(teststr.indexOf("," + el_class + ",") != -1){
            	ret_obj[j] = all_obj[i];
           		j++;
            }
        }
    }
   return ret_obj;
  },
  $Type: function (el_type) {
		var all_obj, ret_obj = new Array(), j = 0, teststr;
    if(document.all) all_obj = document.all;
    else if(document.getElementsByTagName && !document.all) all_obj = document.getElementsByTagName("*");
    for(i = 0; i < all_obj.length; i++) {
    	if(all_obj[i].type && all_obj[i].type.indexOf(el_type) != -1){
            teststr = "," + all_obj[i].type.split(" ").join(",") + ",";
            if(teststr.indexOf("," + el_type + ",") != -1){
            	ret_obj[j] = all_obj[i];
           		j++;
            }
        }
    }
   return ret_obj;
  },
  $Attribute: function (el_atr, el_atr_val) {
		var all_obj, ret_obj = new Array(), j = 0, teststr;
    if(document.all) all_obj = document.all;
    else if(document.getElementsByTagName && !document.all) all_obj = document.getElementsByTagName("*");
    for(i = 0; i < all_obj.length; i++) {
    	if(all_obj[i].getAttributeNode(el_atr) && all_obj[i].getAttribute(el_atr) == el_atr_val){
      	ret_obj[j] = all_obj[i];
        j++;
      }
    }
   return ret_obj;
  },
  getStyle: function (el_id) {
	return Compat.$Id(el_id).style;
  },

/* utility functions */
  log: function(text,replace) {
    var logarea = document.getElementById("log");
    if (!logarea) return;
    if (replace) {
      while(logarea.hasChildNodes())
        logarea.removeChild(logarea.firstChild);
    }
    logarea.appendChild(document.createElement("p").
                 appendChild(document.createTextNode(text)));
  }
}
var compareDivs = {
	init: function(){
		if(!Compat.$Id('mainContent')) return  false;
		var mainHeight= Compat.$Id('mainContent').offsetHeight;
		var heighest = compareDivs.getHeighest();
		if(mainHeight < heighest) Compat.$Id('mainContent').style.height = heighest+'px';
	},
	getHeighest: function(){
		var divs = compareDivs.vertDivs();
		var Heihgts = new Array();
		for(var i = 0; i < divs.length; i++) {
			Heihgts.push(divs[i].offsetHeight);
		}
		Heihgts.sort(compareDivs.numSort);
		Heihgts.reverse();
		return Heihgts[0];
	},
	vertDivs: function(){
		var allDivs = ['sidebar1', 'sidebar2', 'banner_rechts', 'sizer'];  /*hier alle möglichen vertikalen divs eintragen*/
		var currDivs = new Array();
		for(var d = 0; d < allDivs.length; d++){
			if(Compat.$Id(allDivs[d])) currDivs.push(Compat.$Id(allDivs[d]));
		}
		return currDivs;
	},
	numSort: function(a, b) {
		return a - b;
	},
	checkHeight: function(){
		var panels = Compat.$Class('CollapsiblePanelOpen');
		var mainDiv = Compat.$Id('mainContent');
		var mainHeight= mainDiv.offsetHeight;
		var heighest = compareDivs.getHeighest();
		var sumHeight = 0;
		var topSpace = 300;
		for(var p = 0; p < panels.length; p++) sumHeight += panels[p].offsetHeight-25;
		var styleHeight = topSpace+sumHeight+20;
		if(topSpace+sumHeight > mainHeight) {
			mainDiv.style.height = styleHeight+'px';
		} else {
			 if(topSpace+sumHeight > heighest) mainDiv.style.height = styleHeight+'px';
			 else mainDiv.style.height = heighest+'px';
		}
	}
}


function xpos(event) {
  return window.event ? (window.event.clientX +  document.documentElement.scrollLeft +  document.body.scrollLeft) : event.clientX + window.scrollX;
}
function ypos(event) {
  return window.event ? (window.event.clientY + document.documentElement.scrollTop + document.body.scrollTop) : event.clientY + window.scrollY;
}
Compat.addEventHandler(window, "load", compareDivs.init);