function createRequestObject() {
    var ro;
    var browser = navigator.appName;
    if(browser == "Microsoft Internet Explorer"){
        ro = new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        ro = new XMLHttpRequest();
    }
    return ro;
}

var http = createRequestObject();

function sndReq(action, value) {
	url = 'change_prefs.php?'+action+'='+value; 
   	http.open('get', url);
   // http.onreadystatechange = handleResponse;
    http.send(null);
}

function sndReqFetch(url) {
	url = 'fetch.php?url=' + url; 
   	http.open('get', url);
    http.onreadystatechange = handleFetchResponse;
    http.send(null);
}

function sndReqMeta(url) {
	url = 'create_meta_page.php?url=' + url; 
   	http.open('get', url);
    http.onreadystatechange = handleMetaResponse;
    http.send(null);
}

function sndReqCheck(url) {
	url = 'check_url.php?url=' + url; 
   	http.open('get', url);
    http.onreadystatechange = handleCheckResponse;
    http.send(null);
}

function sndReqInsertSite(where) {
	url = 'insert_site.php?where=' + where; 
   	// alert(url);
	http.open('get', url);
    http.onreadystatechange = handleInsertResponse;
    http.send(null);
}

function handleInsertResponse() 
{
	if(http.readyState == 4)
	{
        var response = http.responseText;
		var update = new Array();
		update = response.split('|');
	   
	    // alert(response);
	   
		if(update[0] == 'true')
		{
			location.href = 'index.html?p=' + update[1];
		}
		else
		{
			location.href = 'index.html?p=error';
		}
	}
}		

function handleCheckResponse() 
{
    if(http.readyState == 4)
	{
        var response = http.responseText;
		var update = new Array();
		
		// We have a result in parts seperated with a pipe (|)
		// Split the results into parts
		update = response.split('|');
	    
		document.getElementById('check_res').innerHTML = update[1];
	   	document.getElementById('check_info').innerHTML = update[2];
	   
		if(update[0] == 'ok')
		{
			hide('start_check');
			hide('check_bad');
			hide('checking');
			
			show('check_ok');
		}
		else
		{
			hide('start_check');
			hide('checking');
			hide('check_ok');
			
			show('check_bad');
		}
	}	
}

function handleMetaResponse() 
{
    if(http.readyState == 4)
	{
        var response = http.responseText;
       
		// Our response id the id of the meta analysis file
		location.href="index.html?p=met&id=" + response;
	}
}

function handleFetchResponse() 
{
    if(http.readyState == 4)
	{
        var response = http.responseText;
        var update = new Array();
		
		// We have a result in parts seperated with a pipe (|)
		// Split the results into parts
		update = response.split('|');
	            
		// Set the status message div with the HTTP header result (Required?)
		// document.getElementById('fetch_msg').innerHTML = 'Result: ' + update[0];
	        	
		// If there is an error part 1 should be set to 'error' so check for this
		if(update[1] == 'error')
		{
			alert("Sorry, we were unable to fetch your site details - Please fill the form by hand.");
		}
		else
		{
			// Check that there is content before the pipe
			if(response.indexOf('|' != -1)) 
			{
	           	//alert('Start to fill the form');
				
				// Okay so set the elements with the returned data
				// If there is no data this will just fill a blank
				// So there is no need for additional error checks
				document.getElementById('site_url').value = update[1];
	        	document.getElementById('site_name').value = update[2];
	        	document.getElementById('site_desc').value = update[3];
				document.getElementById('countBody').innerHTML = update[3].length;
				
				// Put out coutry ID into a variable
				var country_id = update[4];
				
				// Check that our country ID is a number (NaN = Not A Number)
				if(!isNaN(country_id) || country_id.length > 1)
				{
					// Now annoying work around becasue javascript insists on inserting by position and not value
					var country_select = document.getElementById('site_country');
					
					// Look at all the countries...
					for (var x = 1; x <country_select.length; x++)
					{
						// ...and if we find a match set to selected
						if(country_select[x].value == country_id)
						{
							country_select.options[x].selected = true;
						}
					}
				}
				
				// See if we have keywords
				if(update[5].length > 0)
				{
					// The keywords are seperated by a pluid (+) so additionally split these
					keys = update[5].split('+');
		           	
					// Count the number of keywords
					var no_of_keys = keys.length;
					
					//alert('No of Keys: ' + no_of_keys);
					
					// We only want a maximum of 20 so reset the count if we have more
					if(no_of_keys > 20)
					{
						no_of_keys = 20;
					}
					//alert('No of Keys after mod: ' + no_of_keys);
					
					// Assuming that we have more that zero (this should have been caught earlier)
					if(no_of_keys > 0)
					{
						//alert('Setting Keys');
						// Fill in each of the keyword tabs
						for(var x = 1; x <= no_of_keys; x++)
						{
							// Set the element ID as index
							index = 'site_key_' + x;
							
							// And now fill the correct element with the kayword
							document.getElementById(index).value = keys[x-1];
							//alert('Index:' + index + ' Set To: ' + keys[x-1]);
						}
					}
				}
				/*else
				{
					var no_of_keys = 0;
				}
				
				//alert('Blanking Remaining Keys');
				// Set the rest to blank - just in case we are writting over previous data
				for (var x = no_of_keys+1; x < 21; x++)
				{
					// Set the element ID as index
					index = 'site_key_' + x;
					
					// And now fill the correct element with a blank
					document.getElementById(index).value = '';
				
					//alert('Index:' + index + ' Set To: [blank]');
				}*/
				
				//alert('Rearrange Display');
				//alert('Done!');
				
				// document.getElementById('fetch_status').value = 'complete';
	        }
			else
			{
				alert('Sorry there was an error - please fill the form by hand.');
			}
		}
		hide('wait');
		show('add_form');
	}
}