function checkEst() {

  if (document.frmEst.imya.value.length <= 1){
		alert('Please provide your name');
		return false;

	}
	
	if (document.frmEst.milo.value.length <= 1){
		alert('Please provide your email address');
		return false;
	}
	return true;
	}

                  
function checkDis1()
{
var checkbox_choices = 0;
for (counter = 0;  counter < document.frmEst.add.length; counter++)
{
if (document.frmEst.add[0].checked){
for (disable = 1; disable < 10; disable++)
document.frmEst.add[disable].disabled = 1;
}
else {
for (disable = 1; disable < 10; disable++)
document.frmEst.add[disable].disabled = 0;
}
}
}


function checkDis2()
{
var checkbox_choices = 0;
for (counter = 0;  counter < document.frmEst.add.length; counter++)
{
if (document.frmEst.add[1].checked){
document.frmEst.add[0].disabled = 1;
}
else {
document.frmEst.add[0].disabled = 0;
}
}
}

function RefreshImage(valImageId) {
	var objImage = document.images[valImageId];
	if (objImage == undefined) {
		return;
	}
	var now = new Date();
	objImage.src = objImage.src.split('?')[0] + '?x=' + now.toUTCString();
}