// Place your application-specific JavaScript functions and classes here
// This file is automatically included by javascript_include_tag :defaults

function swap_field_editable_state (fieldId,obj) {
	field_of_concern=document.getElementById(fieldId)
	checked = obj.checked;
	if (checked == false) {
		field_of_concern.disabled = true;
	}
	 else {
		field_of_concern.disabled = false;
	}	
}

function pop_open_video_file_selector(fieldObj){
	if($F(fieldObj) == 'video'){
		new Effect.BlindDown('video_file_selector',{duration:0.4});	
	}
	 else {
		new Effect.BlindUp('video_file_selector',{duration:0.4});
	}		
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}

function toggle_helper_html(placeholder,url) {
	if($(placeholder).innerHTML.length < 10){
		new Ajax.Updater(placeholder,url,
			{method: 'get',
				onComplete: function(){
					new Effect.BlindDown(placeholder, {duration:0.2});
				}
		});
	}
	else {
		if(Element.visible(placeholder)) {
			new Effect.BlindUp(placeholder, {duration:0.2});
		}
		else {
			new Effect.BlindDown(placeholder, {duration:0.2});
		}
	}
}

function toggle_element_by_id(idName, controlId,showText,hideText){
	var element=$(idName);
	var toggle_button=$(controlId);
	if(! Element.visible(element)){
		new Effect.BlindDown(element,{duration:0.2});
		toggle_button.innerHTML=hideText || 'hide';
	}
	else {
		new Effect.BlindUp(element,{duration:0.2});
		toggle_button.innerHTML=showText || 'show';
	}
}


function toggle_elements_by_class(className, controlId,showText,hideText){
	var elements=document.getElementsByClassName(className);
	var toggle_button=$(controlId);
	for(var i=0; i< elements.length ; i++){
		if(! Element.visible(elements[i])){
			new Effect.BlindDown(elements[i],{duration:0.2});
			toggle_button.innerHTML=hideText || 'hide';
		}
		else {
			new Effect.BlindUp(elements[i],{duration:0.2});
			toggle_button.innerHTML=showText || 'show';
		}
	}
}

function set_hidden_value(elementId,value){
	var element=$(elementId);
	element.value=value;
}

function show_if_not_visible(elementId){
	var element=$(elementId);
	if(! Element.visible(element)){
		new Effect.BlindDown(element,{duration:0.2});
	}
}