function do_bus(s)
{
if (s=='y')
{document.getElementById("yb_0").style.display = "inline";
document.getElementById("yb_1").style.display = "inline";
document.getElementById("yb_2").style.display = "inline";
document.getElementById("yb_3").style.display = "inline";}
else
{document.getElementById("yb_0").style.display = "none";
document.getElementById("yb_1").style.display = "none";
document.getElementById("yb_2").style.display = "none";
document.getElementById("yb_3").style.display = "none";}
}

function do_com_con(s)
{
if (s==1)
{document.getElementById("tt").style.display = "none";
document.getElementById("tt_v").style.display = "inline";}
else
{document.getElementById("tt").style.display = "inline";
document.getElementById("tt_v").style.display = "none";}
}

function do_com_add(s)
{
if (s==1)
{document.getElementById("tt").style.display = "none";
document.getElementById("tt").style.background ="FFFFF";}
else
{document.getElementById("tt").style.display = "inline";}
}

function show_com(s,all)
{
if (all==0)
{
document.getElementById('show_'+s).style.display = "inline";
document.getElementById('text_'+s).style.display = "none";
}
else
{
var x=0;
for (x=0; x<all; x++)
{
document.getElementById('show_'+com_id[x]).style.display = "inline";
document.getElementById('text_'+com_id[x]).style.display = "none";
}
document.getElementById('show_'+s).style.display = "none";
document.getElementById('text_'+s).style.display = "inline";
}
}

function Validator(checkStr)
{
  var allValid = false;
  for (i = 0;  i < checkStr.length;  i++)
  {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkStr.length;  j++)
      if (ch != " ") 
    	{
      	allValid = true
    	}
  }
  
  if (allValid == true)
	{return false}
  else
	{return true}
}

function otevri(obsah,popW,popH) 
	{  var w = 480, h = 340;
	if (document.all || document.layers) 
	{	w = screen.availWidth;
   		h = screen.availHeight;}
	var leftPos = (w-popW)/2, topPos = (h-popH)/2;
	okno = window.open('','okno','location=no,status=no,scrollbars=no,resizable=no,toolbar=no,directories=no,menubar=no,width=' + popW + ',height=' + popH + ',top=' + topPos + ',left=' + leftPos);
	if (!okno.opener) okno.opener = self;
	with(okno.document)
	{
	open();
	write('<html><link rel="stylesheet" type="text/css" href="styles_skripts/styl_1.css">');
	write('<body onblur="self.focus();" topmargin="0" leftmargin="0"><p align="center"><img border="0" src=' + obsah+'>');
	write('<br><input class=btn type=button value="  OK  " onClick=window.close()></p></body></html>');
	close();
	}
	}
	

function addbookmark()
{
bookmarkurl="http://www.Business-Idea.com"
bookmarktitle="Business-Idea : Find your new business ideas and opportunities"
if (document.all)
window.external.AddFavorite(bookmarkurl,bookmarktitle)
}


function doclick(all)
{
var x=0;
formOK = false;
AD=false;
for (x=0; x<all; x++)
{
if (activ[x]!= document.PostForm['activ'+post_id[x]].checked){formOK=true}
if (post_inf[x]!= document.PostForm['Inform'+post_id[x]].checked){formOK=true}
if (post_infcon[x]!= document.PostForm['Inform_con'+post_id[x]].checked){formOK=true}
if (post_ad[x]=='1' && !document.PostForm['i'+post_id[x]][0].checked){formOK=true}
if (post_ad[x]=='2' && !document.PostForm['i'+post_id[x]][1].checked){formOK=true}
if (post_ad[x]=='0' && !document.PostForm['i'+post_id[x]][2].checked)
{formOK=true;
AD=true}
}

if (formOK)
{document.getElementById("tt").style.display = "inline";}
else
{document.getElementById("tt").style.display = "none";}

if (AD)
{document.getElementById("tt_c").style.display = "inline";}
else
{document.getElementById("tt_c").style.display = "none";}
}		

function do_com(choice)
{
  if (choice==1)
	{document.getElementById("tt").style.display = 'none';
	document.PostFormCom.Comments.style.display="none";}
  else
	{document.getElementById("tt").style.display = "inline";
	document.PostFormCom.Comments.style.display="inline";}	
}


function do_ref(id,choice)
{
  if (choice==1)
	{document.getElementById(id).style.display = 'inline';
	document.getElementById(id+'_u').style.display = 'none';
	document.getElementById(id+'_d').style.display = 'inline'}
  else
	{document.getElementById(id).style.display = 'none';
	document.getElementById(id+'_u').style.display = 'inline';
	document.getElementById(id+'_d').style.display = 'none'}	
}


function button(nazev,zdroj) 
{document.images[nazev].src=zdroj;}

function readfont()	{
	var nameEQ = "font=";
	var ca = document.cookie.split(';');
	var elements = document.getElementsByTagName('body')
	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) elements.item(0).style.fontSize = c.substring(nameEQ.length,c.length);
	}
}	
				
function setStyle()	{
	var elements = document.getElementsByTagName('body');
	if (elements.item(0).style.fontSize=='77%')
		{elements.item(0).style.fontSize = '68%';}
	else
		{elements.item(0).style.fontSize = '77%';}
	
	var date = new Date();
	date.setTime(date.getTime()+172800000);
	var expires = "; expires="+date.toGMTString();
	document.cookie = "font="+elements.item(0).style.fontSize+expires+"; path=/";
}
