// JavaScript Document
var splashUl, textSpan, language, selArea, sTimer, backLink, btnCell, storeSel,nextLink,areaTip;
var splashWidth=400;
var selOption="";
var offsetXS=0;
var splanSteps=50;
var splashBlock;

var textBack=new Array("Choose another language", "重新選擇語言", "重新选择语言");
var textTip=new Array("Choose a location", "請選擇地區", "请选择地区");
var textGo=new Array("Enter T & T website", "進入大統華網站", "进入大统华网站");

function grayOut(vis, options) {
  // Pass true to gray out screen, false to ungray
  // options are optional.  This is a JSON object with the following (optional) properties
  // opacity:0-100         // Lower number = less grayout higher = more of a blackout 
  // zindex: #             // HTML elements with a higher zindex appear on top of the gray out
  // bgcolor: (#xxxxxx)    // Standard RGB Hex color code
  // grayOut(true, {'zindex':'50', 'bgcolor':'#0000FF', 'opacity':'70'});
  // Because options is JSON opacity/zindex/bgcolor are all optional and can appear
  // in any order.  Pass only the properties you need to set.
  var options = options || {}; 
  var zindex = options.zindex || 50;
  var opacity = options.opacity || 70;
  var opaque = (opacity / 100);
  var bgcolor = options.bgcolor || '#000000';
  var dark=document.getElementById('darkenScreenObject');
  if (!dark) {
    // The dark layer doesn't exist, it's never been created.  So we'll
    // create it here and apply some basic styles.
    // If you are getting errors in IE see: http://support.microsoft.com/default.aspx/kb/927917
    var tbody = document.getElementsByTagName("body")[0];
    var tnode = document.createElement('div');           // Create the layer.
        tnode.style.position='absolute';                 // Position absolutely
        tnode.style.top='0px';                           // In the top
        tnode.style.left='0px';                          // Left corner of the page
        tnode.style.overflow='hidden';                   // Try to avoid making scroll bars            
        tnode.style.display='none';                      // Start out Hidden
        tnode.id='darkenScreenObject';                   // Name it so we can find it later
    tbody.appendChild(tnode);                            // Add it to the web page
    dark=document.getElementById('darkenScreenObject');  // Get the object.
  }
  if (vis) {
    // Calculate the page width and height 
    if( document.body && ( document.body.scrollWidth || document.body.scrollHeight ) ) {
        var pageWidth = document.body.scrollWidth+'px';
        var pageHeight = document.body.scrollHeight+'px';
    } else if( document.body.offsetWidth ) {
      var pageWidth = document.body.offsetWidth+'px';
      var pageHeight = document.body.offsetHeight+'px';
    } else {
       var pageWidth='100%';
       var pageHeight='100%';
    }   
    //set the shader to cover the entire page and make it visible.
    dark.style.opacity=opaque;                      
    dark.style.MozOpacity=opaque;                   
    dark.style.filter='alpha(opacity='+opacity+')'; 
    dark.style.zIndex=zindex;        
    dark.style.backgroundColor=bgcolor;  
    dark.style.width= pageWidth;
    dark.style.height= pageHeight;
    dark.style.display='block';                          
  } else {
     dark.style.display='none';
  }
}

function getSplash(){
	grayOut(true);		
	splashBlock=document.getElementById('splashCont');		
	chgPos();
	}
	
function getDetails(){
	textSpan=splashUl.getElementsByTagName('span');
	for(i=0;i<textSpan.length;i++){
		textSpan[i].onmouseover=new Function('colorOver('+i+')');
		textSpan[i].onmouseout=new Function('colorOut('+i+')');
		textSpan[i].onclick=new Function('gotoNext('+i+')');
		}
	}
	
function colorOver(n){
	textSpan[n].style.color="#ff0000";
	}
	
function colorOut(n){
	textSpan[n].style.color="#fff";
	}
	
function gotoNext(n){
	language=n;
	selectShow();
	nextLi();
	showGoBtn();
	}

function selectShow(){
	for(i=0;i<selItems[language].split('|').length;i++){
		selOption+="<option value='"+ locationID[i]+"'>"+selItems[language].split('|')[i]+"</option>\n";
		}
	selArea.innerHTML="<select id='location' >"+selOption+"</select>";
	areaTip.innerHTML=textTip[language];
	backLink.value=textBack[language];
	nextLink.value=textGo[language];
/*	for(n=0;n<storeSel.length;n++){
		storeSel[n].onclick=new Function('showGoBtn()');
	}*/
	backLink.onclick=function(){prevLi();selOption="";}
	}
	

function showGoBtn(){
	//nextLink.style.display="inline";
	nextLink.onclick= function(){location.href = "/splash_handler.php?location_id="+ document.getElementById('location').value+"&language_pick="+language_list[language] ;}
	}

function nextLi(){
	if(offsetXS<=(-splashWidth)){
		clearTimeout(sTimer);		 
		}else{
		offsetXS=Math.max((offsetXS-splanSteps),(-splashWidth));
		splashUl.style.left=offsetXS+"px";
		sTimer=setTimeout(nextLi, 10);
		}
	}
	
function prevLi(){
	if(offsetXS>=0){
		//nextLink.style.display="none";
		clearTimeout(sTimer);		 
		}else{
		offsetXS=Math.min((offsetXS+splanSteps),0);
		splashUl.style.left=offsetXS+"px";
		sTimer=setTimeout(prevLi, 10);
		}
	}


function chgPos(){
	//alert(document.body.clientHeight);
	splashBlock.style.left=((screen.width-398)/2)+"px"
	splashBlock.style.top=((document.documentElement.clientHeight-246)/2)+"px"
}
/*window.onload=function(){
	getSplash();
	}*/