js style动态设置table高度

直接在table标签中设置下不就行了吗？这是静态的，如果要动态设置你会吗？

function com_onresize(){
var contentsHeight = document.body.clientHeight;
var buttonsHeight = document.getElementById( "buttons" ).offsetHeight;
var head1Height = document.getElementById( "head1" ).offsetHeight;
var head2Height = document.getElementById( "head2" ).offsetHeight;
var t1 = document.getElementById( "TableContainer1" ).style.height;
var t2 = document.getElementById( "TableContainer2" ).style.height;
//alert(document.getElementById( "TableContainer1" ).style.height);
var h = contentsHeight - buttonsHeight - head1Height - head2Height - 13;
if(h < 110){
return;
}
document.getElementById( "TableContainer1" ).style.height = h/2 + 'px';
document.getElementById( "TableContainer2" ).style.height = h/2 + 'px';
}
function com_sbs_pagesize(){
var screenHeight = window.screen.height;
var availHeight = window.screen.availHeight;
//alert(document.getElementById( "TableContainer1" ).children[0].rows.length);
var index = document.getElementById( "TableContainer1" ).children[0].rows.length
var buttonsHeight = document.getElementById( "buttons" ).offsetHeight;
var head1Height = document.getElementById( "head1" ).offsetHeight;
var head2Height = document.getElementById( "head2" ).offsetHeight;
var mainH = buttonsHeight + head1Height +head2Height + 13;
//20:scroll 35:title 25:tr
while ((availHeight-mainH) < (20 + 35 + 25*index)*2)
{
index = index - 1;
}
var tableHeight = 20 + 35 + 25*index;
document.getElementById( "TableContainer1" ).style.height = tableHeight + 'px';
document.getElementById( "TableContainer2" ).style.height = tableHeight + 'px';
window.resizeTo(document.body.offsetWidth,mainH + tableHeight*2);
}

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