function checkzahl2() { var chkz = 1; for(i=0; i<document.swp2.kwh3652.value.length;++i) if(document.swp2.kwh3652.value.charAt(i) < "0"  || document.swp2.kwh3652.value.charAt(i) > "9") chkz = -1; if(chkz == -1) { alert("Bitte geben Sie eine gültige Zahl ein!"); document.swp2.kwh3652.focus(); return false; } tarife2(); } function tarife2() { var g_business_a; var g_business_b; var g_business_c; var kilowatt; kilowatt = document.swp2.kwh3652.value; g_business_a = (kilowatt * 0.2268 + 135.72);
 g_business_b = (kilowatt * 0.2209 + 135.72); g_business_c = (kilowatt * 0.2149 + 135.72); function runden(x) { var k = (Math.round(x * 100) / 100).toString(); k += (k.indexOf('.') == -1)? '.00' : '00'; return k.substring(0, k.indexOf('.') + 3); } if(kilowatt <= 20000) {document.swp2.g_business_a.value = runden(g_business_a); } else
 {document.swp2.g_business_a.value = ''; } if(kilowatt <= 50000 && kilowatt > 20000) {document.swp2.g_business_b.value = runden(g_business_b); } else {document.swp2.g_business_b.value = ''; } if(kilowatt > 50000){document.swp2.g_business_c.value = runden(g_business_c); } else{document.swp2.g_business_c.value = ''; } }