// Get base url
url = document.location.href;

//alert(url);
xend = url.substring(7,url.length).indexOf("/")+7 ;
var base_url =  url.substring(0, xend) ;

//alert(base_url);
var ajax_get_error = false;

function ajax_do (url) {
	// Does URL begin with http?
	if (url.substring(0, 4) != 'http') {
		url = base_url + url;
	}

	// Create new JS element
	var jsel = document.createElement('SCRIPT');
	jsel.type = 'text/javascript';
	jsel.src = url;

	// Append JS element (therefore executing the 'AJAX' call)
	document.body.appendChild (jsel);

	return true;
}

function ajax_get (url, el) {
	// Has element been passed as object or id-string?
	if (typeof(el) == 'string') {
		el = document.getElementById(el);
	}

	// Valid el?
	if (el == null) { return false; }

	// Does URL begin with http?
	if (url.substring(0, 4) != 'http') {
		url = base_url +"/"+ url;
	}

	// Create getfile URL
 
	getfile_url = base_url + '/javascript/getfile.php?el=' + escape(el.id) + '&random=' + Math.floor(Math.random()*100000000000) + '&url=' + escape (encodeURIComponent(url )) ;
    
	

	ajax_do (getfile_url);
	//alert(getfile_url);

	return true;
}


function toggle_element(id) { //toggles element and returns true if after toggling the element is visible 
	if (!document.getElementById) return;
	var el = document.getElementById(id);
	if (el.style.display=="none")
        el.style.display="block";
    else
       el.style.display="none";
	   return (el.style.display == "block");
}

function block_element(id) { 
	if (!document.getElementById) return;
	var el = document.getElementById(id);
	return (el.style.display == "block");
}


function background_element(id) { 
	if (!document.getElementById) return;
	var el = document.getElementById(id);
	    el.style.background = "#EEEEFF";

}



function ajax_anchor (link_name,url) {

	//var link_expanded = "<span style=background-color:#EEEEFF;>"+link_name+"</span>";


	var info = "<span style=color:red;>Loading ... " +"<span style=color:#FFCCCC;> "+base_url + "</span></span>";
	var current_id = "id_"+Math.floor(Math.random()*100000000000);	  
	var first_time = "(document.getElementById('"+ current_id + "').innerHTML == '') "; 
	var script_action_remote = "{ document.getElementById('"+ current_id + "').innerHTML = '" + info + "'; " +
	                     " ajax_get ( '"  + url + "', '"+ current_id + "');} "; 
	 
	
	var expand_title_script = "{document.getElementById('"+current_id + "Anchor').innerHTML = '"+link_name+"';"+
	                           "document.getElementById('"+current_id + "Triangle').innerHTML = '<img src=/javascript/expanded_triangle.gif border=0>';}";
	
	var collapse_title_script = "{document.getElementById('"+current_id + "Anchor').innerHTML = '"+link_name+"';"+
	                     "document.getElementById('"+current_id + "Triangle').innerHTML = '<img src=/javascript/collapsed_triangle.gif border=0>';}" ;

	var title_script = " if ( toggle_element(\'"+current_id+"\') ) "+ 
	                      expand_title_script +
	                      " else " + 
						  collapse_title_script ;
	
	//title_script = "toggle_element(\'"+current_id+"\')";
	
	//document.write("<span id=\""+current_id+"Top\" style=background:none;>");	
	
	document.write("<span style=cursor:pointer; id=\""+current_id+"Triangle\" onclick=\"if ("+ first_time +")" +script_action_remote+";" + title_script + "\" ><img src=/javascript/collapsed_triangle.gif border=0></span>");
	
	//document.write("<a id=\""+current_id+"Anchor\" href=\"javascript:void(0)\" onclick=\" if (!block_element(\'"+current_id+"\' ) )" + script_action_remote+";" + title_script + "\" >"+link_name+"</a>");
	//document.write("</span>"); //end of current_id+Top element
	document.write("<span style=text-decoration:underline;color:blue;cursor:pointer; id=\""+current_id+"Anchor\" onclick=\" if (!block_element(\'"+current_id+"\' ) )" + script_action_remote+";" + title_script + "\" >"+link_name+"</span>");
	
	
	
	document.write("<span style=float:left;border-style:solid;border-color:#AAAAFF;border-width:2px;display:none; id=\""+ current_id+"\"></span>"); 
 
    
	
 
	return true;
}


function remote_toggle(link_name, url) { // this toggles the remote content next to link_name
	ajax_anchor(link_name, url);
}

function  remote_get(url, id) { //this puts the remote content to the element id
	ajax_get (url,id);
}