function setCSSSize(size) {
		
    switch (size) {               
        case "med":
            var cssLocation = "fileadmin/templates/css/screen/content_med.css";
        break;
        
        case "big":
            var cssLocation = "fileadmin/templates/css/screen/content_big.css";
        break;
        
        case "default":
        case "small":
        default:
            var cssLocation = "fileadmin/templates/css/screen/content.css";
        break;
    
    }
		
	if (document.createStyleSheet) {
	    // CSS für Mozilla, Netscape, Opera nachladen
	    document.createStyleSheet(cssLocation);    
    } else {
        var objStyle = document.createElement("style");
        var objText = document.createTextNode("@import url("+cssLocation+") screen;");
        objStyle.appendChild(objText);
        document.getElementsByTagName("body")[0].appendChild(objStyle);
    }		
}