急，各位帮帮忙

Question

<script>
var xx=screen.width;
switch xx{
case "800":{
document.all.tableId.background="url";
break;
}
..............
}
</script>

Answer 1

<table id=mytable><tr><td>hello</td></tr></table>
<script>
if((screen.width==800)&&(screen.height==600))
document.all.mytable.style.background="yellow";
else
document.all.mytable.style.background="blue";
</script>

Answer 2

window.screen.width
window.screen.height

Answer 3

<script>
var xx=screen.width;
switch (xx){
case "800":{
document.all.tableId.background="url";
break;
}
..............
}
</script>
加到正个页面最后,或定义成函数,在body onload中调用

Answer 4

sorry 哦,马虎,该打.............
<script>
var xx=screen.width;
switch (xx){
case 800:{
document.all.tableId.background="url";
break;
}
..............
}
</script>

Answer 5

document.all.tableId.background="url";这个方法好像不行，你测过没有，

Answer 6

为什么老有这个提示啊，document.all.top1为空或不是对象，top1是table的id号，代码如下
<script>
if ((window.screen.width=="800")&&(screen.height=="600"))
document.all.top1.background ="http://localhost/CopHomepage/img/back_0d01.png";
else 
document.all.top1.background ="img/back_0d01.png";
</script>