Counting how many form elements have been selected

function countCheckboxes() {
var total = 0;
var max = form.element.length;
for (var i=0; i<max; i++) {
if (eval("document.form.element[" + i + "].checked") == true) {
    total += 1;
   }
}
alert(total + " checkboxes have been selected.");
}

function countCheckBoxes(){
	var checkboxes = document.getElementsByTagName("INPUT");
	var total = 0
	for(i=0;i<checkboxes.length;i++){
		if(checkboxes[i].checked) total ++;
	}
	alert(total);
}