var onecount;
onecount=0;

subcat = new Array();

subcat[0] = new Array("企业人物","新闻资讯","企业人物");
subcat[1] = new Array("市场快讯","新闻资讯","市场快讯");
subcat[2] = new Array("企业动态","新闻资讯","企业动态");
subcat[3] = new Array("综合资讯","新闻资讯","综合资讯");
subcat[4] = new Array("安全环保","新闻资讯","安全环保");

onecount=5; 

function changelocation(locationid,c)  
    { 
    document.form1.cate4.length = 0;   

    var locationid=locationid;  
    var v='============';
    var cc=c;
    if (c!=''){v=c}
    var i; 
    document.form1.cate4.options[0] = new Option(v,cc);
    for (i=0;i < onecount; i++) 
        {  
            if (subcat[i][1] == locationid) 
            {  
            document.form1.cate4.options[document.form1.cate4.length]
 = new Option(subcat[i][0], subcat[i][2]);  
            }         
        } 
         
    }