function schriftenGroesser(){
	var fontSize = document.getElementById("content").style.fontSize;
	if(fontSize == ""){
		fontSize = "12px";
	}
	fontSize = (parseInt(fontSize) + 1)+"px";
	document.getElementById("content").style.fontSize = fontSize;
}

function schriftenKleiner(){
        var fontSize = document.getElementById("content").style.fontSize;
        if(fontSize == ""){
                fontSize = "12px";
        }
        fontSize = (parseInt(fontSize) - 1)+"px";
        document.getElementById("content").style.fontSize = fontSize;
}

function resizeBg(){
	    var ratio = 1688/1125; 
            var h = self.innerHeight || document.documentElement.clientHeight || document.body.clientHeight; 
            var w = self.innerWidth || document.documentElement.clientWidth || document.body.clientWidth; 
            var elem = document.getElementById('background'); 
            if((w/ratio) > h){ 
                    elem.width = w; 
                    elem.height = w/ratio;
            }else{ 
                    elem.height = h; 
                    elem.width = h*ratio; 
            }
    } 

onload = function()
{

     resizeBg();
     jQuery('#background').fadeIn();
     //jQuery('#spsipcdrivesImg').fadeTo(0,0);
     //jQuery('#spsipcdrives').css('z-index','10');
     //jQuery('#visionmesse').css('z-index','20');
     //jQuery('#spsipcdrives').css('visibility', 'visible');
     //jQuery('#visionmesse').css('visibility', 'visible');

}

onresize = function()
{
	resizeBg();
}

var messe = true;

/*
function switchMesseBanner()
{
	if(messe){
		jQuery('#spsipcdrivesImg').fadeTo('slow',1.0);
		jQuery('#spsipcdrives').css('z-index','20');
		jQuery('#visionmesse').css('z-index','10');
		jQuery('#visionmesseImg').fadeTo('slow',0.0);
		messe = false;
	}else{
		jQuery('#visionmesseImg').fadeTo('slow',1);
                jQuery('#spsipcdrives').css('z-index','10');
                jQuery('#visionmesse').css('z-index','20');
                jQuery('#spsipcdrivesImg').fadeTo('slow',0);
		messe = true;
	}
}
*/

//window.setInterval(switchMesseBanner, 3000);