function setLight(prefix, id)
{
	for (i=1;i<=5;i++)
	{
		if(i<=id)
		{
			src = star3_src;
		}
		else
		{
			src = star1_src;
		}
		
		document.getElementById(prefix + '_' + i).src = src;
	}
}

function loseLight(prefix, id, rate)
{
	for(i=1; i<=5; i++)
	{
		if ((rate >= i-0.75) && (rate <= i-0.25))
		{
			src = star2_src;
		}
		else if(i-0.25 < rate)
		{
			src = star3_src;
		}
		else 
		{
			src = star1_src;
		}
		
		document.getElementById(prefix + '_' + i).src = src;
	}
}

function offLight(prefix)
{
	for(i=1; i<=5; i++)
	{
		document.getElementById(prefix + '_' + i).setAttribute('onmouseout','');
		document.getElementById(prefix + '_' + i).setAttribute('onmouseover','');
		document.getElementById(prefix + '__' + i).setAttribute('onclick','');
	}
}