$(document).ready(function() {

var DS_Date=new Date();
var d=DS_Date.getDate();
var m=DS_Date.getMonth()+1;
var s;

/*
  if(m>1&&m<=3)s=0;
  if(m==3&&d>19)s=1;
  if(m>3&&m<=6)s=1;
  if(m==6&&d>20)s=2;
  if(m>6&&m<=9)s=2;
  if(m==9&&d>21)s=3;
  if(m>9&&m<=12)s=3;
  if(m==12&&d>20)s=0;
*/

// ab 1.11 Winter
// ab 15.3 Sommer
if (m>=3&&m<11) {
if (m==3) {
	if (d>=15) {
		s = 1;
	} else {
		s = 0;
	}
} else {
	s = 1;
}
} else {
s = 0;
}

// Winter-Test
//s = 0;

if (s == 1) {
	if(document.getElementById) {
		document.getElementById('header_inner').style.backgroundImage = "url(site/images/site/bg/header_sommer.png)";
	}
} else {
	if(document.getElementById) {
		document.getElementById('header_inner').style.backgroundImage = "url(site/images/site/bg/header_winter.png)";
	}
}

});