function doSearch(start)
{ 
	
    var xhr; 
    try {  xhr = new ActiveXObject('Msxml2.XMLHTTP');   }
    catch (e) 
    {
        try {   xhr = new ActiveXObject('Microsoft.XMLHTTP');    }
        catch (e2) 
        {
          try {  xhr = new XMLHttpRequest();     }
          catch (e3) {  xhr = false;   }
        }
     }

 document.getElementById('resultsContainer').innerHTML = "Searching.....";
    xhr.onreadystatechange  = function()
    { 

		

         if(xhr.readyState  == 4)
         {
			
              if(xhr.status  == 200) {
                  document.getElementById('resultsContainer').innerHTML= xhr.responseText; 
				
		tb_init('a.thickbox, area.thickbox, input.thickbox');//pass where to apply thickbox
	imgLoader = new Image();// preload image
	imgLoader.src = tb_pathToImage;

			  }
              else 
                 document.getElementById('resultsContainer').innerHTML= xhr.status;
         }
    }; 

	var theelements = document.ajaxSearchForm;
	var thestr = '';
	for (i = 0; i < theelements.length; i++) {
		element = theelements[i];

		
		if (element.type=='checkbox') {
			
			if (element.checked) 
				thestr +=  encodeURIComponent(element.name) + "=" + encodeURIComponent(element.value) + "&";
		}
		else {

		
		thestr +=  encodeURIComponent(element.name) + "=" + encodeURIComponent(element.value) + "&";

		}
	}
	
	var parameters = "search=true&"+thestr;

	

   xhr.open("POST", WP_INSTALL_PATH+"/wp-content/plugins/pcomparison/search_results.php?start="+start,  true); 
	
	 xhr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      xhr.setRequestHeader("Content-length", parameters.length);
      xhr.setRequestHeader("Connection", "close");
      xhr.send(parameters);

   
}