FORM and Callendar

How to combine DhtmlxForm and DhtmlxCallendar ??

when not load Form, load Calendar -> Calendar work, Form not work
when Load Form, load Calendar -> Calendar not work, Form work

<link rel="stylesheet"  type="text/css" href="Calendar/skins/dhtmlxcalendar_dhx_blue.css" charset="utf-8">
<link rel="stylesheet" type="text/css" href="Calendar/dhtmlxcalendar.css"> 
<link rel="stylesheet" type="text/css" href="Form/skins/dhtmlxform_dhx_skyblue.css">
<script>
  window.dhx_globalImgPath="Calendar/imgs/";
<script>

window.onload = function () {

	mCal = new dhtmlxCalendarObject('dhtmlxCalendar', false, {isYearEditable: true});
	mCal.attachEvent("onClick",mSelectDate);
	mCal.draw();

	
}

function mSelectDate(date) {
	document.getElementById('mCalInput').innerHTML = mCal.getFormatedDate("%d.%m.%Y", date);
	return true;
}
Emergency Contact and Medical Information
    Calendar
<li ftype="radio" name="select" focus="1" _disabled="1" class="classname" style="" value="online">Will enjoy the online demo</li>
<li ftype="radio" name="select" value="disk" checked="true">Please send me disk
    <ul>
        <li ftype="checkbox" name="bootleg" checked="true">Insert bootleg</li>
        <li ftype="checkbox" name="lyrics" checked="true">Lyrics if possible</li>
        <div>Payment</div>

Please check:

viewtopic.php?f=17&t=14757
viewtopic.php?f=17&t=14528

thx

are the way to init calendar from

    clear form ???

    or it only with initialize from object ??