var GRAS = 1;
var KORN = 2;
var POTET = 3;

/**
* Performs form changes when crop type selection changes
*/
function updateCropChanges(cropTypeList)
{
	var cropType = cropTypeList.options[cropTypeList.selectedIndex].value;
	
	var weekGrowthStarts = document.getElementById("weekGrowthStarts");
	var weekGrowthStartsLabel = document.getElementById("weekGrowthStartsLabel");
	var harvestUnit = document.getElementById("harvestUnit");
	var expectedHarvest = document.getElementById("expectedHarvest");
	
	if(cropType == GRAS)
	{
		weekGrowthStartsLabel.innerHTML="vekststart";
		weekGrowthStarts.value="16";
		harvestUnit.innerHTML="kg tørrstoff/daa pr. slått";
		expectedHarvest.value="400"; 
	}
	else if(cropType == KORN)
	{
		weekGrowthStartsLabel.innerHTML="såing";
		weekGrowthStarts.value="18";
		harvestUnit.innerHTML="kg/daa";
		expectedHarvest.value="500";
	}
	else if(cropType == POTET)
	{
		weekGrowthStartsLabel.innerHTML="setting";
		weekGrowthStarts.valule="18";
		harvestUnit.innerHTML="kg/daa";
		expectedHarvest.value="3000";
	}
	else
	{
		weekGrowthStartsLabel.innerHTML="vekststart/såing/setting";
		weekGrowthStarts.value="";
		harvestUnit.innerHTML="kg/daa";
		expectedHarvest.value="";
	}
	
}