function imageError(ctrl)
{
    ctrl.src="images/no-image.gif";
}
function imageError2(ctrl)
{
    ctrl.src="images/no-image_2.gif";
}

function minimumLength(sender,args)
{           
    args.IsValid = (args.Value.length >= 6)
}
function textCounter(field, maxlimit) 
{    
    
    if (field.value.length > maxlimit)
        field.value = field.value.substring(0, maxlimit);
}