////////////////////////////////////////
// FANCY WAY TO GET THE DOCUMENT ELEMENT
////////////////////////////////////////
/*
type=id|name (you can specify getElementByID or getElementByName)
*/
function get_element(el_id,doc_id) {
	if(document.getElementById) {
		return document.getElementById(el_id);
	}
	if( document.all ) {
		return document.all[el_id]; 
	}
	if( !doc_id ) { 
		doc_id = document; 
	}
	if( document.layers ) {
		if( doc_id.layers[el_id] ) { 
			return doc_id.layers[el_id]; 
		} else {
			//repeatedly run through all child layers
			for( var x = 0, y; !y && x < doc_id.layers.length; x++ ) {
				//on success, return that layer, else return nothing
				y = getRefToDiv(el_id,doc_id.layers[x].document); 
			}
			return y; 
		}
	}
	return false;
}


///////////////////
// IMAGE SWAPPING
///////////////////
function swap_image(id, img_src) {
	id_el = get_element(id);
	
	if(!id_el) {
		return false;
	}
	
	o_img_src = id_el.src;
	id_el.src = img_src;
}
function swap_image_restore() {
	id_el.src = o_img_src;
}
function preload_images(images) {
	images = images.replace(" ","");
	images = images.split(",");
	var tmp = null; 
	for (var a=0; a<images.length; a++) { 
		tmp = images[a]; 
		images[a] = new Image(); 
		images[a].src = tmp;
	}
}


///////////////////
// OTHER MISC
///////////////////
function open_window(url,name,features) {
  window.open(url,name,features);
}
function go_to_url(location) {
	window.location.href = location;
}




////////////////////////////////////////////////////////////
// FUNCTION TO CLEAR THE "VALUE" OF A FORM INPUT
////////////////////////////////////////////////////////////
function input_focus(el, default_value, replace) {
	if(typeof replace == 'undefined') {
		replace='';
	}
	if(typeof default_value != 'undefined') {
		window['saved_value_'+el.name] = default_value;
	} else if(typeof window['saved_value_'+el.name] == 'undefined') {
		window['saved_value_'+el.name] = el.value;
	}
	
	if(window['saved_value_'+el.name]) {
		if(el.value == window['saved_value_'+el.name]) {
			el.value = replace;
		}
	} else {
		el.value = replace;
	}
}
function input_blur(el, replace) {
	if(typeof(replace) == 'undefined' 
	&& typeof(window['saved_value_'+el.name]) != 'undefined') {
		replace = window['saved_value_'+el.name];
	} else if(typeof(replace) == 'undefined') {
		replace='';
	}
	if (el.value === '') {
		el.value = replace;
	}
}



////////////////////
// SHOW/HIDE LAYER
////////////////////


// TOGGLE ELEMENTS BASED ON VALUE OF (select|checkbox|radio)
function toggle_display(trigger_id, trigger_value, target_id, toggle_type, trigger_comparison) {
	
	// CONVERT TO ARRAY
	if(is_array(trigger_value) == false) {
		var trigger_value = new Array(trigger_value);
	}
	
	// CONVERT TO ARRAY
	if(is_array(target_id) == false) {
		var target_id = new Array(target_id);
	}

	// GET ELEMENTS
	var elem_trigger_id = get_element(trigger_id);
	var check_value = false;
	
	// fail if no element exists
	if(!elem_trigger_id) {
		return false;
	}
	
	
	// GET VALUE
	if(elem_trigger_id.type.search(/(radio|checkbox)/i) != -1) {
		// GET VALUE OF ELEMENTS
		var elements = elem_trigger_id.form.elements[elem_trigger_id.name];
		var trigger_id_value = get_checked_value(elements);
	} else if(elem_trigger_id.type.search(/(select-one|select-multiple|text|hidden)/i) != -1) {
		var trigger_id_value = elem_trigger_id.value;
	} else {
		return false;
	}
	
	
	// TEST VALUE (if it's not disabled)
	// if trigger is disabled then the value is irrelevant
	if(elem_trigger_id.disabled == false) {
		for(var a=0; a<trigger_value.length; a++) {
			if(trigger_comparison == "!=") {
				if(trigger_id_value != trigger_value[a]) {
					check_value = true;
					break;
				}
			} else if(trigger_comparison == ">") {
				if(trigger_id_value > trigger_value[a]) {
					check_value = true;
					break;
				}
			} else if(trigger_comparison == "<") {
				if(trigger_id_value < trigger_value[a]) {
					check_value = true;
					break;
				}
			} else if(trigger_comparison == "==" || trigger_comparison == "=") {
				// allow for array
				if(trigger_id_value.search(/<array>/i) != -1) {
					trigger_id_value = trigger_id_value.split('<array>');
					for(var b=0; b<trigger_id_value.length; b++) {
						if(trigger_id_value[b] == trigger_value[a]) {
							check_value = true;
							break;
						}
					}
				} else {
					if(trigger_id_value == trigger_value[a]) {
						check_value = true;
						break;
					}
				}
			}
		}
	}
	
	
	if(check_value === true) {
		var execute_toggle = true;
	}
	
	
	
	// toggle on or off if set to toggle, based on check_value match
	if(toggle_type != "show" && toggle_type != "hide") {
		if(check_value === true) {
			toggle_type="show";
		} else {
			toggle_type="hide";
		}
		execute_toggle = true;
	}
	
	// EXECUTE FOR EACH TARGET
	
	for(var a=0; a<target_id.length; a++) {	
		if(execute_toggle === true) {
			toggle_visibility(target_id[a], toggle_type);
		}
	}
	
}


// BACKWARD COMPATIBLE NAME, (deprecated)
function trigger_toggle_visibility(trigger_id, trigger_comparison, trigger_value, target_id, toggle_type) {
	toggle_display(trigger_id, trigger_value, target_id, toggle_type, trigger_comparison);
}



// TOGGLE VISIBILITY
function toggle_visibility(id,action) {
	// GET ELEMENTS
	var elem_id = get_element(id);
	// fail if no element exists
	if(!elem_id || !elem_id.style) {
		return false;
	}
	if(action=="show") {
		var visibility_value = 'visible';
		var display_value = '';
		var disable_value = false;
	} else if(action=="hide") {
		var visibility_value = 'hidden';
		var display_value = 'none';
		var disable_value = true;
	}
	// TOGGLE
	elem_id.style.visibility=visibility_value;
	elem_id.style.display=display_value;
	elem_id.disabled = disable_value;
}




function select_warning(msg1, id, msg2) {
	
	var elem_select = get_element(id);
	
	// fail if no element exists
	if(!elem_select.style) {
		return false;
	}
	
	var select_text = elem_select.options[elem_select.selectedIndex].text;
	
	var results = confirm(msg1+select_text+msg2);
	
	return results;
}



// SET SELECTED ELEMENT
function set_selected(cookie_name, id, p) {
	if(typeof p == 'undefined') {
		p='/';
	}
	Cookie.set(cookie_name, id, {path: p});
}



// CHECK IF AN OBJECT IS AN ARRAY OR A STRING
/* 
Returns true if is an array
*/
function is_array(obj) {
    return obj.constructor == Array;
}


// GET THE VALUE OF THE RADIO OBJECT
function get_checked_value(obj) {
	if(!obj) {
		return "";
	}
	
	var len = obj.length;
	if(typeof len == 'undefined') {
		if(obj.checked) {
			return obj.value;
		} else {
			return "";
		}
	}
	for(var i = 0; i < len; i++) {
		if(obj[i].checked) {
			return obj[i].value;
		}
	}
	return "";
}

function dump(arr)
{
	var dumped_text = "";
	
	//Array/Hashes/Objects
	if(typeof(arr) == 'object')
	{
		for(var item in arr)
		{
			var value = arr[item];
			
			//If it is an array
			if(typeof(value) == 'object')
			{
				dumped_text += '<ul>' + "<li>" + item + "<ul>";
				dumped_text += dump(value);
				dumped_text += '</ul></li></ul>';
			}
			else
			{
				dumped_text += "<li>'" + item + "' => \"" + value + "\"</li>";
			}
		}
	}
	//Stings/Chars/Numbers etc
	else
	{
		dumped_text = "===>"+arr+"<===("+typeof(arr)+")";
	}
	
	return dumped_text;
}