// JavaScript Document
function initialize_date_trigger(date_field,date_trigger){
		Calendar.setup({
		inputField     :    date_field,     // id of the input field
		ifFormat       :    "%d-%m-%Y",      // format of the input field
		button         :    date_trigger,  // trigger for the calendar (button ID)
		align          :    "T1",           // alignment (defaults to "Bl")
		singleClick    :    true
		});	
		
	}