function 	debug(obj) {
		var d = '';
		for (var i in obj) d += i+' : '+obj[i]+"\r\n";
		alert(d);
	}

/* math */

	function inarray(co, kde) {
		var len = kde.length;
		var rslt = -1;
		var i=0;
		while ( i < len && rslt==-1 ) {
			if (kde[i] == co) rslt = i;
			i++;
		}
//		return rslt!=-1 ? rslt : false;
		return rslt!=-1 ? true : false;
	}

	function arraysearch(co, kde) {
		var len = kde.length;
		var rslt = -1;
		var i=0;
		while ( i < len && rslt==-1 ) {
			if (kde[i] == co) rslt = i;
			i++;
		}
		return rslt!=-1 ? rslt : false;
//		return rslt!=-1 ? true : false;
	}

	function round(cislo, prec) {
		var zaklad = Math.floor(cislo);
		if (zaklad == cislo) return zaklad;
		var desmista = cislo - zaklad;
		var exp = Math.pow(10, prec);
		desmista = Math.round(desmista*exp) / exp;
		return zaklad + desmista;
	}

/* bloky */

	function element(name) {
		if (document.getElementById) return document.getElementById(name);
		if (document.all) return document.all[name];
		if (document.layers) return document.layers[name];
		return false;
	}

	function givefocus() {
		var blok = element('takefocus');
		if (blok) blok.focus();
		return true;
	}

	function getElementsByClassName(clsName) {
		var i, matches=new Array();
		var els=document.getElementsByTagName('*');

		for(i=0; i < els.length; i++) {
			if(els.item(i).className==clsName) matches.push(els.item(i));
		}
		return matches;
	}

	function hide(name) {
		var blok = element(name);
		if (!blok) return false;
		blok.style.display = 'none';
		return true;
	}

	function show(name) {
		var blok = element(name);
		if (!blok) return false;
		blok.style.display = 'block';
		return true;
	}
	
	function showhide(name) {
		var blok = element(name);
		if (!blok) return false;
		var stav = blok.style.display;
		if (stav == 'block') blok.style.display = 'none';
		else blok.style.display = 'block';
		if (false) return true;		// workaround pro warning v mozille
	}

	function mailto(name, domain) {
		if (name == '' || domain == undefined || domain == '') return '';
		return(document.location.href="mailto:"+name+"@"+domain);
	}

	function emailsplit(name, domain) {
		if (name == '' || domain == undefined || domain == '') return '';
		return name+'@'+domain;
	}

	function emaillink(name, domain) {
		document.write("<a href='#' onclick=\"return mailto('"+name+"','"+domain+"\')\">"+name+"@"+domain+"</a>");
	}


	function catchkeypress(e) {
		var pressedKey = ("undefined" == typeof (e)) ? event.keyCode : e.keyCode ;
/*		if (pressedKey == "27") { // ASCII code of the ESC key
			alert('Zmackls ESC. Proc?');
		}
*/		return true;
	}

/* windows */

	function OpenWindow(url, name) {
		return window.open(url, name);
	}

	function openwindow(url, name) {
		return OpenWindow(url, name);
	}

	function closeandredirect(url) {
		window.opener.document.location.href = url;
		window.close();
		return true;
	}

	function redirect(url) {
		document.location.href = url;
		return true;
	}

	function delconfirm() {
		return window.confirm('Opravdu smazat?');
	}

	function openwin(url) {
		return !window.open(url, '_blank');
	}


/*	nejede, hazi rekurzi v mozille
	function confirm(zprava) {
		if (zprava == undefined) zprava = 'Jste si jist?';
		return window.confirm(zprava);
	}
*/
	function doconfirm() {
		return window.confirm('Jste si jist?');
	}

	function registerevent(id, event, func) {
		var el = element(id);
		if (el) {
			if (event=='onclick') el.onclick = func;
			if (event=='onchange') el.onchange = func;
			if (event=='onfocus') el.onfocus = func;
			if (event=='onblur') el.onblur = func;
			if (event=='onmouseover') el.onmouseover = func;
			if (event=='onmouseout') el.onmouseout = func;
			if (event=='onsubmit') el.onsubmit = func;
			if (event=='onkeyup') el.onkeyup = func;
			return true;
		}
		return false;
	}
	
	var inits = new Array(givefocus);

	function registerinit(func) {
		if (!inarray(func, inits)) {
			inits[inits.length] = func;
			return true;
		}
		else return false;
	}
	
	function coreinit() {
		var len = inits.length;
		for(var i=0; i < len; i++) {
			inits[i].call();
		}
		return true;
	}

	window.onload = coreinit;

/* if (typeof(obj) != null) */