// JavaScript Document

function alternate(id)
{
	if(document.getElementsByTagName)
	{  
		var table = document.getElementById(id);  
		var rows = table.getElementsByTagName("tr");  
		for(i = 0; i < rows.length; i++)
		{          
			//manipulate rows
			if(i % 2 == 0)
			{
				rows[i].className = "even";
			}
			else
			{
				rows[i].className = "odd";
			}      
   		}
	 }
}

function changeHealth(healthDivID, bloodDivID)
{
	//alert ("HEALTH WORKING!!");

	var healthDiv = document.getElementById(healthDivID);
	var bloodDiv = document.getElementById(bloodDivID);

	if(healthDiv.style.display = "none")
	{
		healthDiv.style.display = "block";
		bloodDiv.style.display = "none"
	}
}

function changeBlood(bloodDivID, healthDivID)
{
	//alert ("BLOOD WORKING!!");

	var healthDiv = document.getElementById(healthDivID);
	var bloodDiv = document.getElementById(bloodDivID);

	if(bloodDiv.style.display = "none")
	{
		bloodDiv.style.display = "block";
		healthDiv.style.display = "none"
	}
}

function checkHealthTotal() {
	var total = document.healthForm.total;
	var sum = 0;
	
    for (i=0;i<document.healthForm.elements.length;i++)
	{
		if (getCheckedValue(document.healthForm.elements[i]) != "")
		{
			
			sum = sum + parseInt(getCheckedValue(document.healthForm.elements[i]));
		}
	}
	
	total.value = sum;
}

function checkBloodTotal() {
	var total = document.bloodForm.total;
	var sum = 0;
	
    for (i=0;i<document.bloodForm.elements.length;i++)
	{
		if (getCheckedValue(document.bloodForm.elements[i]) != "")
		{
			
			sum = sum + parseInt(getCheckedValue(document.bloodForm.elements[i]));
		}
	}
	
	total.value = sum;
}

function getCheckedValue(radioObj) {
	if(!radioObj)
		return "";
	var radioLength = radioObj.length;
	if(radioLength == undefined)
		if(radioObj.checked)
			return radioObj.value;
		else
			return "";
	for(var i = 0; i < radioLength; i++) {
		if(radioObj[i].checked) {
			return radioObj[i].value;
		}
	}
	return "";
}