function lhnews(obj){
	obji=document.getElementById(obj);
   if(obji.style.display=='none'){
	   obji.style.display='block';
	   }else{
	   obji.style.display='none';
    }
}
// target _blank
function externallinks() {
 if (!document.getElementsByTagName) return;
 var anchors = document.getElementsByTagName("a");
 for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href") &&
       anchor.getAttribute("rel") == "external")
     anchor.target = "_blank";
 }
} 
function getBrowser(){
	return navigator.userAgent;
	//alert(navigator.userAgent); 
}
//open window
function openWindow(url,name,features){
 if (name==null) name='_blank';
 if (features==null) features='';
 window.open(url,name,features); 
}

//rollover
function newimage( imgSrc ){

 var imgName = new Image();
 imgName.src = imgSrc;

 return imgName;

}

function change( imgName, imgLocation )
{
 document[imgName].src = imgLocation ;
}

var preloadFlag = false;
function loadimages()
{
 if (document.images)
 {

 aboutus_over = newimage("images/nav_aboutus_on.gif");
 download_over = newimage("images/nav_download_on.gif");
 products_over = newimage("images/nav_products_on.gif");
 service_over = newimage("images/nav_service_on.gif");
 supports_over = newimage("images/nav_supports_on.gif");
 careers_over = newimage("images/nav_careers_on.gif");
 partners_over = newimage("images/nav_partners_on.gif");
 solutions_over = newimage("images/nav_solutions_on.gif");
 lang_en_over = newimage("images/lang_en_on.gif");
 lang_cn_over = newimage("images/lang_cn_on.gif");
 
 arrow_up_over = newimage("images/arrow_up_on.gif");
 arrow_down_over = newimage("images/arrow_down_on.gif");
 arrow_left_over = newimage("images/arrow_left_on.gif");
 arrow_right_over = newimage("images/arrow_right_on.gif");

 preloadFlag = true;
 }
}

//sub menu
function showmenu(str){
	if(str=="download"){
		document.getElementById('sub1').style.display="block";
		document.getElementById('sub2').style.display="none";
	}else if(str=="supports"){
		document.getElementById('sub1').style.display="none";
		document.getElementById('sub2').style.display="block";
	}else{
		document.getElementById('sub1').style.display="none";
		document.getElementById('sub2').style.display="none";
	}
}


//show gallery
function setGalleryImg( url ){
	document.getElementById("gallery_img").src= url;
}

//toggle a div
function toggle(obj) {
	var el = document.getElementById(obj);
	if ( el.style.display != 'block' ) {
		el.style.display = 'block';
	}
	else {
		el.style.display = 'none';
	}
}