function setJSCalender(){
	Calendar.setup({
        inputField     :    "date_to", 
        ifFormat       :    "%Y-%m-%d",  
        displayArea    :    "",
        daFormat       :    "",
        align          :    "B2", 
        singleClick    :    true
    });
    Calendar.setup({
        inputField     :    "date_from", 
        ifFormat       :    "%Y-%m-%d",  
        displayArea    :    "",
        daFormat       :    "",
        align          :    "B2", 
        singleClick    :    true
    });
}
function bindEvent(el, sType, fn, capture) {
	if(window.attachEvent) {
		el.attachEvent("on" + sType, fn);
	} else if(window.addEventListener) {
		el.addEventListener(sType, fn, (capture));   
	}
}
bindEvent(window, "load", setJSCalender, false);