function Today(){
   var d, s = ""; 
   var z;         
d = new Date();                          
   
   z=  d.getYear();
   z = (z<1900?(1900+z):z);    
   s += z + "-";
   s += (d.getMonth()<9?"0"+(d.getMonth() + 1):(d.getMonth()+1) ) + "-";
   
   s += (d.getDate()<10?"0"+ d.getDate(): d.getDate()) ;
   return(s);
  }
function daycompare(s1,s2)//s1最新日期，s2是以前的日期
{
s1 = s1.replace(/-/g, "/"); 
s2 = s2.replace(/-/g, "/"); 
s1 = new Date(s1);
s2 = new Date(s2);
var time = 4;
var days= s1.getTime() - s2.getTime(); 
time = parseInt(days / (1000 * 60 * 60 * 24));
return(time);
}
function if_new(dataNews)
{
var daynum = daycompare(Today(),dataNews);
if(0<=daynum && daynum<7)
{
document.write("<span class='new'>new</span>");
}
}