// JavaScript Document
function ShowDateFile_YS(){
	if(document.forms.old_cheese.Year.selectedIndex==0)   { alert("请选择年份"); return false;}
	if(document.forms.old_cheese.Month.selectedIndex==0)  { alert("请选择月份"); return false;}
	if(document.forms.old_cheese.Day.selectedIndex==0)    { alert("请选择日期"); return false;}
                
	year  = document.forms. old_cheese. Year.options[document.forms. old_cheese.Year.selectedIndex].value;
	month = document.forms. old_cheese. Month.options[document.forms. old_cheese.Month.selectedIndex].value;
	day   = document.forms. old_cheese. Day.options[document.forms. old_cheese.Day.selectedIndex].value;
        
        
	if((year==2002 && month<11)){alert("往日新闻是从2002年11月1日开始的"); return false;}
		var isNew = 1;
        
        if(year < 2006){
            isNew = 0;
        }else if(year == 2006){
            isNew = 0;
            if( month < 7){
                isNew = 0;
            }
            if(month == 7 && day <= 14){
                isNew = 0;
            }
            if(month == 7 && day > 14){
                isNew = 2;
            }

            if(month == 8){
                isNew = 2;
            }
            if(month == 9 && day <= 11){
                isNew = 2;
            }
            if(month == 9 && day > 11){
                isNew = 1;
            }
            if(month > 9){
                isNew = 1;
            }
            if(month == 12 && day <= 4){
                isNew = 1;
            }
            if(month == 12 && day > 4){
                isNew = 3;
            }
        }else if (year > 2006){
            isNew = 3;
        }
        
        switch (isNew){
            case 0:loadpos="http://www.china.com.cn/chinese/MATERIAL/411782_"+year+month+day+".htm";break;
            case 1:loadpos="http://www.china.com.cn/review/"+year+"-"+month+"/"+day+"/node_7002418.htm";break;
            case 2:loadpos="http://www.china.com.cn/review/"+year+"-"+month+"/"+day+"/node_5411782.htm";break;
            case 3:loadpos="http://www.china.com.cn/TopNews/"+year+"-"+month+"/"+day+"/node_7002418.htm";break;
            default:loadpos="http://www.china.com.cn";
        }
        

        controlWindow=window.open(loadpos,"_blank");
        return false;
}


function Show_BlkBlackTab(BlkBlackTabid_num,BlkBlackTabnum){
	for(var i=0;i<2;i++){document.getElementById("BlkBlackTabcontent_"+BlkBlackTabid_num+i).style.display="none";}
	for(var i=0;i<2;i++){document.getElementById("BlkBlackTabmenu_"+BlkBlackTabid_num+i).className="BlkBlackTabOff";}
	document.getElementById("BlkBlackTabmenu_"+BlkBlackTabid_num+BlkBlackTabnum).className="BlkBlackTab";
	document.getElementById("BlkBlackTabcontent_"+BlkBlackTabid_num+BlkBlackTabnum).style.display="block";
}

function popKey(key){
 window.open("http://news.china.com.cn/chinanet/07news/china.cgi?word="+escape(key));
}