function GoPrev(whichForm) {
	oForm = eval(whichForm);
	oForm.JumpToPage.selectedIndex -= 1;
	oForm.submit();
}

function GoNext(whichForm) {
	oForm = eval(whichForm);
	oForm.JumpToPage.selectedIndex += 1;
	oForm.submit();
}

function changePricingLevel(whichForm) {
	eval(whichForm).submit();
}