function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function tip_click( in_num ) {
		//MM_showHideLayers(answer,'','show');
		for( i = 0; i < 11; i++ ) {
			show_hide_answer(i, "none");
			highlight_unhighlight_link( i, "" );
		}
		show_hide_answer(in_num, "block");
		highlight_unhighlight_link( in_num, "_highlight" );
	}
	
	function hide_answers( in_num ) {
		// display the first tip
		if ( in_num > 0 ) {
			tip_click( in_num )
		}
		//move the divs in ns 4
		ns4_move_answers( );
	}
	

	function ns4_move_answers( ) {
		
		//alert( document.height );
		if ( !document.getElementById && document.layers ) {
			for( i = 1; i < 10; i++ ) {
				obj = MM_findObj("tip_answer_"+i);
				bg = MM_findObj("tip_answer_placeholder");
				if( obj != null ) {
					//alert( bg.pageY  );
					obj.pageY = -obj.pageY + bg.pageY;
				}
			}
		}
	}
	
	

		function show_hide_answer( in_num, action ) {
			var obj;
			answer_div = "tip_answer_"+in_num;
			
			if ( (obj=MM_findObj(answer_div) )!=null ) { 
				
				if ( !document.getElementById && document.all ) // ie 4
				{
					action = (action=="block") ? "" : action;					
				}
				else if ( !document.getElementById && document.layers ) // ns 4
				{
					
					if( action == "block" )
						obj.clip.bottom = 600;
					else
						obj.clip.bottom = 0;
				}
				
				if( obj.style )
					obj=obj.style; 
					
				obj.display=action;
			}
		}
	
	function highlight_unhighlight_link( in_num, action ) {
		var obj;
			link_id = "tip_link_"+in_num;
			
			if ( (obj=MM_findObj(link_id) )!=null ) { 
				
				obj.className = "tip_question"+action;
			}
	}
	
	function click_brain( in_name ) {	
		MM_swapImage( 'brain','','../content_images/symptoms/'+in_name+'_on.jpg',1 );
	}
	
	function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  	if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  	else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
	}
//	MM_reloadPage(true);

// external links in new window
function externalLinks() {

	if (!document.getElementsByTagName) return;
	var anchors = document.getElementsByTagName("a");
	for (var i=anchors.length-1; i>=0; i--) {
		var anchor = anchors[i];
		if (anchor.hostname && anchor.hostname != document.location.hostname )
			anchor.target = "_blank";
	}
}
window.onload = externalLinks;