function highlight(){ 
    var td = document.getElementsByTagName('td'); 
    var x = td.length; 

    for(i=0;i<x;i++){ 
        td[i].onmouseover = new Function("this.bgColor='beige';"); 
        td[i].onmouseout = new Function("this.bgColor='white';"); 
    } 
  }