function openLinks(links_array) {
	// prepare variable
    var links_correct   = [];
   
    // regex
    var _validUrl   = /^(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/;
    var _lTrim      = /^\s+/g;
   
   
    // check links and remove incorrect links
    for (i = 0; i <= links_array.length-1; i++) {
   
        // clean whitespaces - a'la ltrim
        links_array[i] = links_array[i].replace(_lTrim, '');
       
        // check validate url
        if ( _validUrl.test(links_array[i]) ) {
            links_correct.push( links_array[i] );
        }
       
    }

   
    // total links
    var links_num = links_correct.length;
   
    // error: no links
    if (links_correct.length < 1) {
        alert('Proszę wybrać przynajmniej jedną firmę.');
        return false;
    }
   
   
    // opens in new window
    for (i = 0; i <= links_num-1; i++) {
        var links = links_correct[i];
		var time = i*1000;
		openLink(links, time);
		
		
		
    }
   
   
    // block other actions
    return false;

}// JavaScript Document

function openLink(links, time)
	{
	
	setTimeout(function() {window.open( links, '_blank' )},time);
	}
	
function linksGo()
	{
	var links = new Array();
	$.each($("input[name='tow[]']:checked"), function() {
	  links.push($(this).val());
	  });
	openLinks(links);
	}

function links()
{
$("#landing-button")
	.click(function()
			{
				
				linksGo();
			});
}