var checked = 0;

window.onload = function()
{
	if(document.getElementById('same_ship_address').checked == true)
	{
		checked = 1;
	}
	//alert(document.getElementById('same_ship_address').checked);
}

function sameAddress()
{
	if(checked == 0)
	{
		same();
		checked = 1;
	}
	else
	{
		sameClear();
		checked = 0;
	}
	
}

function same()
{
	document.getElementById('bill_address').value = document.getElementById('ship_address').value;
	document.getElementById('bill_city').value = document.getElementById('ship_city').value;
	document.getElementById('bill_state').value = document.getElementById('ship_state').value;
	document.getElementById('bill_zip').value = document.getElementById('ship_zip').value;
}

function sameClear()
{
	document.getElementById('bill_address').value = '';
	document.getElementById('bill_city').value = '';
	document.getElementById('bill_state').value = '';
	document.getElementById('bill_zip').value = '';
}