function check(field)
{
	for (i = 0; i < field.length; i++)
	{
		field[i].checked = true;
	}
}
function uncheck(field)
{
	for (i = 0; i < field.length; i++)
	{
		field[i].checked = false;
	}
}

function checkChoice(field, i) {
if (i == 0) { // "All" checkbox selected.
if (field[0].checked == true) {
for (i = 1; i < field.length; i++)
field[i].checked = false;
   }
}
else  {  // A checkbox other than "Any" selected.
if (field[i].checked == true) {
field[0].checked = false;
      }
   }
}


function getCheckedValues(form) {
	
	//alert("Hi");
	var checkedvalues = "";
	for(var i =0; i < form.elements.length; i++) {
		
		if(form.elements[i].type=="checkbox" && form.elements[i].checked==true) {
			var thisvalue = form.elements[i].value;
			if(checkedvalues != "") {
				checkedvalues += "+" + thisvalue;
			}
			else
			{
				checkedvalues = thisvalue;
			}
		}
	}
	//alert(checkedvalues);
	return checkedvalues;
}