Event.observe(window, 'load', function() {
    premieberekeningHandler();
});

function premieberekeningHandler(){
	var selectboxOne = $('optie1').getElementsByTagName('option');
	$('optie1').onchange = function(){checkSelected(selectboxOne);}
}

function checkSelected(first){
	var firstValue;
	for(var i =0; i < first.length; i++)
		{
			if(first[i].selected){
				firstValue = first[i].value;
				break;
			}	
		}
	persistData(firstValue);
}

function persistData(first, second){
	var newPremie = 0.00;
	switch(first){
		case '2000':
			newPremie = 350;
			break;
		case '3000':
			newPremie = 400;
			break;
		case '5000':
			newPremie = 500;
			break;
		case '7000':
			newPremie = 600;
			break;
		case '9000':
			newPremie = 725;
			break;
		default:
			newPremie = parseFloat(350);
			break;
	}

	
	var newPremie = (newPremie / 12).toFixed(2);
	if(newPremie >= 100){
		$('currency').style.fontSize = "2.5em";
		$('premie1').style.fontSize = "2.5em";
		$('premie2').style.fontSize = "1.5em";
	} else {
		$('currency').style.fontSize = "3em";
		$('premie1').style.fontSize = "3em";
		$('premie2').style.fontSize = "2em";
	}
	var premieString = newPremie.toString();
	var premie1 = premieString.split(".")[0] + ",";
	var premie2 = premieString.split(".")[1];
	$("premie1").update (premie1);
	$("premie2").update (premie2);
}