/***** DETECTION ******/

//initialization, browser, os detection
var d, dom, nu='', brow='', ie, ie4, ie5, ie5x, ie6, ie7;
var ns4, moz, moz_rv_sub, release_date='', moz_brow, moz_brow_nu='', moz_brow_nu_sub='', rv_full=''; 
var mac, win, old, lin, ie5mac, ie5xwin, konq, saf, op, op4, op5, op6, op7;

d=document;
n=navigator;
nav=n.appVersion;
nan=n.appName;
nua=n.userAgent;
old=(nav.substring(0,1)<4);
mac=(nav.indexOf('Mac')!=-1);
win=( ( (nav.indexOf('Win')!=-1) || (nav.indexOf('NT')!=-1) ) && !mac)?true:false;
lin=(nua.indexOf('Linux')!=-1);
// begin primary dom/ns4 test
// this is the most important test on the page
if ( !document.layers )
{
	dom = ( d.getElementById ) ? d.getElementById : false;
}
else { 
	dom = false; 
	ns4 = true;// only netscape 4 supports document layers
}
// end main dom/ns4 test

op=(nua.indexOf('Opera')!=-1);
saf=(nua.indexOf('Safari')!=-1);
konq=(!saf && (nua.indexOf('Konqueror')!=-1) ) ? true : false;
moz=( (!saf && !konq ) && ( nua.indexOf('Gecko')!=-1 ) ) ? true : false;
ie=((nua.indexOf('MSIE')!=-1)&&!op);
if (op)
{
	str_pos=nua.indexOf('Opera');
	nu=nua.substr((str_pos+6),4);
	brow = 'Opera';
}
else if (saf)
{
	str_pos=nua.indexOf('Safari');
	nu=nua.substr((str_pos+7),5);
	brow = 'Safari';
}
else if (konq)
{
	str_pos=nua.indexOf('Konqueror');
	nu=nua.substr((str_pos+10),3);
	brow = 'Konqueror';
}
// this part is complicated a bit, don't mess with it unless you understand regular expressions
// note, for most comparisons that are practical, compare the 3 digit rv nubmer, that is the output
// placed into 'nu'.
else if (moz)
{
	// regular expression pattern that will be used to extract main version/rv numbers
	pattern = /[(); \n]/;
	// moz type array, add to this if you need to
	moz_types = new Array( 'Firebird', 'Phoenix', 'Firefox', 'Galeon', 'K-Meleon', 'Camino', 'Epiphany', 
		'Netscape6', 'Netscape', 'MultiZilla', 'Gecko Debian', 'rv' );
	rv_pos = nua.indexOf( 'rv' );// find 'rv' position in nua string
	rv_full = nua.substr( rv_pos + 3, 6 );// cut out maximum size it can be, eg: 1.8a2, 1.0.0 etc
	// search for occurance of any of characters in pattern, if found get position of that character
	rv_slice = ( rv_full.search( pattern ) != -1 ) ? rv_full.search( pattern ) : '';
	//check to make sure there was a result, if not do  nothing
	// otherwise slice out the part that you want if there is a slice position
	( rv_slice ) ? rv_full = rv_full.substr( 0, rv_slice ) : '';
	// this is the working id number, 3 digits, you'd use this for 
	// number comparison, like if nu >= 1.3 do something
	nu = rv_full.substr( 0, 3 );
	for (i=0; i < moz_types.length; i++)
	{
		if ( nua.indexOf( moz_types[i]) !=-1 )
		{
			moz_brow = moz_types[i];
			break;
		}
	}
	if ( moz_brow )// if it was found in the array
	{
		str_pos=nua.indexOf(moz_brow);// extract string position
		moz_brow_nu = nua.substr( (str_pos + moz_brow.length + 1 ) ,3);// slice out working number, 3 digit
		// if you got it, use it, else use nu
		moz_brow_nu = ( isNaN( moz_brow_nu ) ) ? moz_brow_nu = nu: moz_brow_nu;
		moz_brow_nu_sub = nua.substr( (str_pos + moz_brow.length + 1 ), 8);
		// this makes sure that it's only the id number
		sub_nu_slice = ( moz_brow_nu_sub.search( pattern ) != -1 ) ? moz_brow_nu_sub.search( pattern ) : '';
		//check to make sure there was a result, if not do  nothing
		( sub_nu_slice ) ? moz_brow_nu_sub = moz_brow_nu_sub.substr( 0, sub_nu_slice ) : '';
	}
	if ( moz_brow == 'Netscape6' )
	{
		moz_brow = 'Netscape';
	}
	else if ( moz_brow == 'rv' || moz_brow == '' )// default value if no other gecko name fit
	{
		moz_brow = 'Mozilla';
	} 
	if ( !moz_brow_nu )// use rv number if nothing else is available
	{
		moz_brow_nu = nu;
		moz_brow_nu_sub = nu;
	}
	if (n.productSub)
	{
		release_date = n.productSub;
	}
}
else if (ie)
{
	str_pos=nua.indexOf('MSIE');
	nu=nua.substr((str_pos+5),3);
	brow = 'Microsoft Internet Explorer';
}
// default to navigator app name
else 
{
	brow = nan;
}
op5=(op&&(nu.substring(0,1)==5));
op6=(op&&(nu.substring(0,1)==6));
op7=(op&&(nu.substring(0,1)==7));
op8=(op&&(nu.substring(0,1)==8));
op9=(op&&(nu.substring(0,1)==9));
ie4=(ie&&!dom);
ie5=(ie&&(nu.substring(0,1)==5));
ie6=(ie&&(nu.substring(0,1)==6));
ie7=(ie&&(nu.substring(0,1)==7));
// default to get number from navigator app version.
if(!nu) 
{
	nu = nav.substring(0,1);
}
/*ie5x tests only for functionavlity. dom or ie5x would be default settings. 
Opera will register true in this test if set to identify as IE 5*/
ie5x=(d.all&&dom);
ie5mac=(mac&&ie5);
ie5xwin=(win&&ie5x);

/**********************/



function changeLocation(obj)
{document.location.href=obj.options[obj.selectedIndex].value;}

function changeStyle(obj, className)
{obj.className=className;}

function changeImage(imgSrc, imgId)
{
    obj = document.getElementById(imgId);
    obj.src = imgSrc;
}

// javascript function for generating object code
function AC_Generateobj(objAttrs, params, embedAttrs) 
{ 
  var str = '<object ';
  for (var i in objAttrs)
    str += i + '="' + objAttrs[i] + '" ';
  str += '>';
  for (var i in params)
    str += '<param name="' + i + '" value="' + params[i] + '" /> ';
  str += '<embed ';
  for (var i in embedAttrs)
    str += i + '="' + embedAttrs[i] + '" ';
  str += ' ></embed></object>';

 document.write(str);
}

//make flash object
function AC_FL_RunContent(){
  var ret = 
    AC_GetArgs
    (  arguments, "movie", "clsid:d27cdb6e-ae6d-11cf-96b8-444553540000"
     , "application/x-shockwave-flash"
    );
  AC_Generateobj(ret.objAttrs, ret.params, ret.embedAttrs);
}

//make quicktime object
function AC_QT_RunContent(){
  var ret = 
    AC_GetArgs
    (  arguments, "src", "clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B"
     , null
    );
  AC_Generateobj(ret.objAttrs, ret.params, ret.embedAttrs);
}

function AC_GetArgs(args,srcParamName, classid, mimeType){
  var ret = new Object();
  ret.embedAttrs = new Object();
  ret.params = new Object();
  ret.objAttrs = new Object();
  for (var i=0; i < args.length; i=i+2){
    var currArg = args[i].toLowerCase();    

    switch (currArg){	
      case "classid":
        break;
      case "pluginspage":
        ret.embedAttrs[args[i]] = args[i+1];
        break;
      case "src":
      case "movie":	
        ret.embedAttrs["src"] = args[i+1]; 
        ret.params[srcParamName] = args[i+1];
        break;
      case "onafterupdate":
      case "onbeforeupdate":
      case "onblur":
      case "oncellchange":
      case "onclick":
      case "ondblClick":
      case "ondrag":
      case "ondragend":
      case "ondragenter":
      case "ondragleave":
      case "ondragover":
      case "ondrop":
      case "onfinish":
      case "onfocus":
      case "onhelp":
      case "onmousedown":
      case "onmouseup":
      case "onmouseover":
      case "onmousemove":
      case "onmouseout":
      case "onkeypress":
      case "onkeydown":
      case "onkeyup":
      case "onload":
      case "onlosecapture":
      case "onpropertychange":
      case "onreadystatechange":
      case "onrowsdelete":
      case "onrowenter":
      case "onrowexit":
      case "onrowsinserted":
      case "onstart":
      case "onscroll":
      case "onbeforeeditfocus":
      case "onactivate":
      case "onbeforedeactivate":
      case "ondeactivate":
      case "type":
      case "codebase":
        ret.objAttrs[args[i]] = args[i+1];
        break;
      case "width":
      case "height":
      case "align":
      case "vspace": 
      case "hspace":
      case "class":
      case "title":
      case "accesskey":
      case "name":
      case "id":
      case "tabindex":
        ret.embedAttrs[args[i]] = ret.objAttrs[args[i]] = args[i+1];
        break;
      default:
        ret.embedAttrs[args[i]] = ret.params[args[i]] = args[i+1];
    }
  }
  ret.objAttrs["classid"] = classid;
  if (mimeType) ret.embedAttrs["type"] = mimeType;
  return ret;
}


function fixPng()
{
if(win && !ie7 && ie) {
	is = document.getElementsByTagName('IMG'); // get all images
	for(x=0; x<is.length; x++){ // cycle through those images
		if(is[x].src.indexOf('.png')>0){ // only do this to png files
                                                is[x].width = is[x].width;
                                                is[x].height = is[x].height;
			is[x].style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+is[x].src+"', sizingMethod='scale')"; 
                                                is[x].src = "/pkp_bbdo/images/www/leer.gif"; // replace the image with a clear gif so that the filter can show through
		}
	}
}

}

function isOk()
{
  if (document.getElementById("search_keywords").value.length==0)
 {
    alert("Geben Sie bitte ein Suchbegriff ein.");
    return false;
 }
 if (document.getElementById("search_keywords").value.length<3)
 {
    alert("Suchbegriff muss mindestens 3 Buchstaben beinhalten.");
    return false;
 }
return true;
}