function erase1(thisform)
{
	document.forms[thisform].elements['size2'].options[0].selected = true;
	document.forms[thisform].elements['size3'].options[0].selected = true;
	document.forms[thisform].elements['size4'].options[0].selected = true;
}

function erase2(thisform)
{
	document.forms[thisform].elements['size1'].options[0].selected = true;
	document.forms[thisform].elements['size3'].options[0].selected = true;
	document.forms[thisform].elements['size4'].options[0].selected = true;
}

function erase3(thisform)
{
	document.forms[thisform].elements['size1'].options[0].selected = true;
	document.forms[thisform].elements['size2'].options[0].selected = true;
	document.forms[thisform].elements['size4'].options[0].selected = true;
}

function erase4(thisform)
{
	document.forms[thisform].elements['size1'].options[0].selected = true;
	document.forms[thisform].elements['size2'].options[0].selected = true;
	document.forms[thisform].elements['size3'].options[0].selected = true;
}