document.writeln("<select name='cat_level_1' size='1' ");
			document.writeln("onchange='cat_level_1_gewaehlt(this.form.cat_level_1.options[this.form.cat_level_1.selectedIndex].value)'>");

			document.writeln("<option value=''>Categories 1. Level</option>");

			for (i=0;i<cat_level_1.length;i++)
			{
				if (cat_level_1[i][0] == cat_1_selected)
				{
					document.writeln("<option value='"+cat_level_1[i][0]+"' selected>"+cat_level_1[i][1]+"</option>");

				} else {
					document.writeln("<option value='"+cat_level_1[i][0]+"'>"+cat_level_1[i][1]+"</option>");
				}
			}
			document.writeln("</select><br/>");

			document.writeln("<select name='cat_level_2' size='1' ");
			document.writeln("onchange='cat_level_2_gewaehlt(this.form.cat_level_2.options[this.form.cat_level_2.selectedIndex].value)'>");
			cat_level_2_aufbauen(cat_1_selected);
//			document.writeln("<option selected value=''>Kategorie 2. Ebene</option>");
			document.writeln("</select><br/>");

			document.writeln("<select name='cat_level_3' size='1'> ");
			cat_level_3_aufbauen(cat_2_selected);
//			document.writeln("<option selected value=''>Kategorie 3. Ebene</option>");
			document.writeln("</select><br/>");