function changeImage(site, idyshnik, image_width, image_height){
  	document.getElementById( site + 'BigMainImage' ).src = web_catalog + "/portfolio/web/" + site + "/" + idyshnik + ".jpg";
  	document.getElementById( site + 'BigMainImage' ).width = image_width;
  	document.getElementById( site + 'BigMainImage' ).height = image_height;
  	for(var i = 1; i < 5; i++)
  		document.getElementById( site + 'title' + i ).style.display = 'none';	
  	document.getElementById( site + 'title' + idyshnik ).style.display = 'block';
  	document.getElementById( site + 'RefVeryBig').href= web_catalog + "/portfolio/web/" + site + "/" + idyshnik + "-big.jpg"
  }
  
  var preloaded = new Array();
  var num_preloaded = 0;
  function preload_images() {
     	for (var i = 0; i < arguments.length; i++) {
        	   preloaded[num_preloaded] = document.createElement('img');
        	   preloaded[num_preloaded].setAttribute('src', arguments[i]);                  	   
  	   num_preloaded++;  	   
  	}
  }
  
  function load_images(site) {
  	preload_images(
     web_catalog + '/portfolio/web/' + site + '/1.jpg', 
     web_catalog + '/portfolio/web/' + site + '/2.jpg', 
     web_catalog + '/portfolio/web/' + site + '/3.jpg', 
     web_catalog + '/portfolio/web/' + site + '/4.jpg'
     ); 
  }
  
  function load_all_images() {
    var sites = new Array('holidaysin360', 'photosite', 'aesi', 'ict', 'luxury', 'extreme', 'wordsmoney', 'eastwed', 'zegu', 'offshore_properties', 'chickstyle', 'poker', 'vanso', 'jobmatter', 'qjump', 'source4design', 'balticmatch', 'buildingsurplus', 'famboogle', 'fotoclub', 'mariareme' );
    for (var j = 0; j < sites.length; j++) {
    	load_images(sites[j]);    	 
    }
  }