function goLink(num){
        var Links = new Array();
		var Tars = new Array();
        
		//china
		Links[1] = "http://www.sontec.com/cn/index.html";Tars[1] = "_self";
				
        //english
		Links[2] = "http://www.sontec.com/eng/index.html";Tars[2] = "_self";
		
		//japan
		Links[3] = "http://www.sontec.com/jp/index.html";Tars[3] = "_self";
		
    	//korean
		Links[4] = "http://www.sontec.co.kr/index.html";Tars[4] = "_self";
		
		
    
    window.open(Links[num],Tars[num]);
}