if (document.images) {
  scrupOn = new Image();
  scrupOn.src = "ricola/images/internet/hist_scroll_up_over.gif"
  scrupOff = new Image();
  scrupOff.src = "ricola/images/spacer.gif"

  scrdownOn = new Image();
  scrdownOn.src = "ricola/images/internet/hist_scroll_down_over.gif"
  scrdownOff = new Image();
  scrdownOff.src = "ricola/images/spacer.gif"
  
  cent1920On = new Image();
  cent1920On.src = "ricola/images/internet/" + language + "/hist_1920_over.gif"
  cent1920Off = new Image();
  cent1920Off.src = "ricola/images/internet/" + language + "/hist_1920.gif"
  
  cent1940On = new Image();
  cent1940On.src = "ricola/images/internet/" + language + "/hist_1940_over.gif"
  cent1940Off = new Image();
  cent1940Off.src = "ricola/images/internet/" + language + "/hist_1940.gif"
  
  cent1960On = new Image();
  cent1960On.src = "ricola/images/internet/" + language + "/hist_1960_over.gif"
  cent1960Off = new Image();
  cent1960Off.src = "ricola/images/internet/" + language + "/hist_1960.gif"
  
  cent1980On = new Image();
  cent1980On.src = "ricola/images/internet/" + language + "/hist_1980_over.gif"
  cent1980Off = new Image();
  cent1980Off.src = "ricola/images/internet/" + language + "/hist_1980.gif"
  
  cent1990On = new Image();
  cent1990On.src = "ricola/images/internet/" + language + "/hist_1990_over.gif"
  cent1990Off = new Image();
  cent1990Off.src = "ricola/images/internet/" + language + "/hist_1990.gif"
  
  cent2000On = new Image();
  cent2000On.src = "ricola/images/internet/" + language + "/hist_2000_over.gif"
  cent2000Off = new Image();
  cent2000Off.src = "ricola/images/internet/" + language + "/hist_2000.gif"

}

function rollOver() {
  if (document.images) {
    for (var i=0; i<rollOver.arguments.length; i+=2) {
      document[rollOver.arguments[i]].src = eval(rollOver.arguments[i+1] + ".src");
    }
  }
}

function openPicture(imgName,imgWidth,imgHeight,alt) { 
	newWindow = window.open("","histPopup","width="+imgWidth+",height="+imgHeight+",scrollbars=no");
	newWindow.document.open();
	newWindow.document.write('<html><title>'+alt+'</title><body bgcolor="#FFFFFF" leftmargin="0" topmargin="0" marginheight="0" marginwidth="0" onClick="self.close()" onBlur="self.close()">'); 
	newWindow.document.write('<img src=\"ricola/images/internet/'+imgName+'\" width='+imgWidth+' height='+imgHeight+' alt=\"'+alt+'\">');
	newWindow.document.write('</body></html>');
	newWindow.document.close();
	newWindow.focus();
}