function calcLeft(intLeft){
	return Math.max(document.body.clientWidth,548)/2-274+intLeft;
}


function popupImpressum(){		
	var win = window.open('popup_impressum.html','objImage','left='+((screen.width/2)-154)+',top='+((screen.height/2)-200)+',width=317,height=400');
}

function imgButtonInit(_name)
{
	
	var _doc = document;
	
	if(_name && window.document.getElementById(_name).document) {
		_doc = window.document.getElementById(_name).document;
	}

 	for(i=0;i<_doc.images.length;i++){
		
		if(_doc.images[i].id.indexOf('but') != -1 || _doc.images[i].id.indexOf('nav') != -1){    			        
			var parentNode = document.images[i].parentNode;
															
			parentNode.imgLo = new Image();
			parentNode.imgHi = new Image();
			
			parentNode.imgLo = _doc.images[i].src;
			parentNode.imgHi = _doc.images[i].src.replace('_lo','_hi');
			parentNode.imgHi = parentNode.imgHi.replace('-lo','-hi');            
			
			parentNode.img = _doc.images[i];	
			_doc.images[i].a = parentNode;
		}
		if(_doc.images[i].id.indexOf('but') != -1){  
			parentNode.onmouseover = imgButtonHi;
			parentNode.onmouseout = imgButtonLo;
		}
		else if(_doc.images[i].id.indexOf('nav') != -1){  
			parentNode.hi = imgButtonHi;
			parentNode.lo = imgButtonLo;
		}
		
    }        
    
    function imgButtonHi(){
        this.img.src = this.imgHi;
    }
    function imgButtonLo(){
        this.img.src = this.imgLo;
    }
	
}

var blnBlack = false;
function setDesign(){
	if(blnBlack){
		top.document.getElementById('imgrb').src = '_images/_bg/bg_right_bottom_black.gif';
		top.document.getElementById('imgr').src = '_images/_bg/bg_right_black.gif';
		top.document.getElementById('imgl').src = '_images/_bg/bg_left_black.gif';
		top.document.getElementById('imglb').src = '_images/_bg/bg_left_bottom_black.gif';
		
		top.document.getElementById('navFestival').src = '_images/_nav/nav_festival_ok-black-lo.gif';
		
		top.document.getElementById('navFestival').a.imgHi = '_images/_nav/nav_festival_ok-black-hi.gif';
		top.document.getElementById('navFestival').a.imgLo = '_images/_nav/nav_festival_ok-black-lo.gif';
		
		top.document.getElementById('imgt').src = '_images/_img/img_top_black.gif';
		
		if(top.document.body) top.document.body.style.backgroundColor = '#000000';
		 else top.document.style.backgroundColor = '#000000';
	}
	else {
		top.document.getElementById('imgrb').src = '_images/_bg/bg_right_bottom.gif';
		top.document.getElementById('imgr').src = '_images/_bg/bg_right.gif';
		top.document.getElementById('imgl').src = '_images/_bg/bg_left.gif';
		top.document.getElementById('imglb').src = '_images/_bg/bg_left_bottom.gif';
		
		top.document.getElementById('navFestival').src = '_images/_nav/nav_festival_ok-lo.gif';
		top.document.getElementById('navFestival').a.imgHi = '_images/_nav/nav_festival_ok-hi.gif';
		top.document.getElementById('navFestival').a.imgLo = '_images/_nav/nav_festival_ok-lo.gif';
		
		top.document.getElementById('imgt').src = '_images/_img/img_top.gif';
		
		if(top.document.body) top.document.body.style.backgroundColor = '#0D69B8';
		 else top.document.style.backgroundColor = '#0D69B8';
	}
	
}


function popupStimmen(){
	var win = open('/kabaretttage/popup_stimmen.html','winStimmen','width=428,height=460,scrollbars=yes');
}