/* 
 *	IDLib 1.3 (2001-11-17) ©2001 juha@kaunis.to | http://kaunis.to/project/idlib/
 */

var ns4 = (document.layers)? true:false;
var ns6 = (navigator.appName=='Netscape' && navigator.appVersion.substring(0,3) == '5.0')? true:false;
var w3c = (document.getElementById)? true:false;
var ie4 = (document.all)? true:false;
var ie5 = (navigator.userAgent.indexOf("MSIE 5")!=-1)? true:false;
var ie6 = (navigator.userAgent.indexOf("MSIE 6")!=-1)? true:false;
var opr = (navigator.userAgent.indexOf('Opera')!=-1)? true:false;

var libReady = false;
var imgReady = false;

if (ns4) {
	var scr_width = 'window.innerWidth';
	var scr_height = 'window.innerHeight';
	var form_str = 'document.forms.formid.fieldid';
	var lyr_str = 'document.layers["lyr"]';
	var lyr_visible = 'show';
	var lyr_hidden = 'hide';
	var lyr_style = '';
	var lyr_suffix = '';
}
else if (ie4) {
	var scr_width = 'document.body.clientWidth';
	var scr_height = 'document.body.clientHeight';
	var form_str = 'document.forms.formid.fieldid';
	var lyr_str = 'document.all.lyr';
	var lyr_visible = 'visible';
	var lyr_hidden = 'hidden';
	var lyr_style = '.style';
	var lyr_suffix = 'px';
}
else if (w3c) {
	var scr_width = 'window.innerWidth';
	var scr_height = 'window.innerHeight';
	var form_str = 'document.forms.formid.fieldid';
	var lyr_str = 'document.getElementById("lyr")';
	var lyr_visible = 'visible';
	var lyr_hidden = 'hidden';
	var lyr_style = '.style';
	var lyr_suffix = 'px';
}

function idlGetLyr(id) {
	var lyrLoc = lyr_str.replace('lyr',id);
	return new Array(eval(lyrLoc),lyrLoc,lyrLoc+lyr_style);}

function idlGetForm(formId,fieldId) {
	var formLoc = form_str.replace('formid',formId).replace('fieldid',fieldId);
	return new Array(eval(formLoc),formLoc,formLoc+lyr_style);}

function idlGetPos(id) {
	var ypos = Number(new String(eval(idlGetLyr(id)[2]).top).replace('px',''));
	var xpos = Number(new String(eval(idlGetLyr(id)[2]).left).replace('px',''));
	return new Array(xpos,ypos);}

function idlSetPos(id,x,y,clip) {
	var lyrStyle = new Object(eval(idlGetLyr(id)[2]));
	lyrStyle.top = y+lyr_suffix;lyrStyle.left = x+lyr_suffix;
	if (clip) {idlClip(lyrStyle,clip[0],clip[1],clip[2],clip[3]);}}

function idlLyrVis(id,f) {
	var lyrStyle = eval(idlGetLyr(id)[2]);
	if (f == 'show') {lyrStyle.visibility = lyr_visible;}
	else {lyrStyle.visibility = lyr_hidden;}}

function idlImgSwap(name,src,nest) {
	if (imgReady) {
		if (ns4) {document.layers[nest].document.images[name].src = eval(src+'.src');}
		else {document.images[name].src = eval(src+'.src');}}
	}

function idlResizeFix() {
	if (ns4) document.location = document.location;}

// following functions intended mainly for IDLib's internal use

function idlClip(lyr,t,r,b,l) {
	if (ns4) {lyr.clip.top = t;lyr.clip.right = r;lyr.clip.bottom = b;lyr.clip.left = l;}
	else {lyr.style.clip = 'rect('+t+'px '+r+'px '+b+'px '+l+'px)';}}

var libReady = true;