html中鼠标放上去变颜色 在HTML里怎样让鼠标移上去变颜色

表格行指向变色，请运行偶写的代码：

function table_tr_changec(){

var tableObj=document.getElementById('de_table');

var tableobj_tr=tableObj.getElementsByTagName('tr');

var tableobj_tr_len=tableobj_tr.length;

var hover_color='#FF0000';

var normal_color='#FFFFFF';

for(var i=0;i

this.flog=0;

tableobj_tr[i].οnmοuseοver=function (){

this.style.cursor='pointer';

this.flog=1;

if(this.flog==1){

this.style.backgroundColor=hover_color;

}

}

tableobj_tr[i].οnmοuseοut=function (){

this.flog=0;

this.style.backgroundColor=normal_color;

}

}

}

var ta_lock;

function table_hover(){

ta_lock=setInterval("table_tr_changec()");

}

function table_out(){

clearInterval(ta_lock);

}