var calendar=null;function selected(cal,date){cal.sel.value=date;}
function closeHandler(cal){cal.hide();Calendar.removeEvent(document,"mousedown",checkCalendar);}
function checkCalendar(ev){var el=Calendar.is_ie?Calendar.getElement(ev):Calendar.getTargetElement(ev);for(;el!=null;el=el.parentNode)
if(el==calendar.element||el.tagName=="A")break;if(el==null){calendar.callCloseHandler();Calendar.stopEvent(ev);}}
function showCalendar(id){var el=document.getElementById(id);if(calendar!=null){calendar.hide();calendar.parseDate(el.value);}else{var cal=new Calendar(true,null,selected,closeHandler);calendar=cal;cal.setRange(1900,2070);calendar.create();calendar.parseDate(el.value);}
calendar.sel=el;calendar.showAtElement(el);Calendar.addEvent(document,"mousedown",checkCalendar);return false;}