function calculate()
	{

		var imgHigh = document.getElementById('high1').src;
		var xa = imgHigh.split("/");
		var ta = xa.length-1;
		var ya = xa[ta];

		var imgPass = document.getElementById('pass1').src;
		var xb = imgPass.split("/");
		var tb = xb.length-1;
		var yb = xb[tb];
		if(ya=='checked.jpg' && yb=='unchecked.jpg') //is high
				{
				alert("yup");
	}
	}