javascript(获取或设置html元素的宽,高,坐标)

document.getElementById('id').style.width=value
document.getElementById('id').style.height=value
document.getElementById('id').style.top=value
document.getElementById('id').style.left=value

获取:

value=document.getElementById('id').offsetLeft
value=document.getElementById('id').offsetTop
value=document.getElementById('id').offsetWidth
value=document.getElementById('id').offsetHeight

找一个元素的坐标：

function findPosition( oElement )
{
var x2 = 0;
var y2 = 0;
var width = oElement.offsetWidth;
var height = oElement.offsetHeight;
alert(width + "=" + height);
if( typeof( oElement.offsetParent ) != 'undefined' )
{
for( var posX = 0, posY = 0; oElement; oElement = oElement.offsetParent )
{
posX += oElement.offsetLeft;
posY += oElement.offsetTop;
}
x2 = posX + width;
y2 = posY + height;
return [ posX, posY ,x2, y2];

} else{
x2 = oElement.x + width;
y2 = oElement.y + height;
return [ oElement.x, oElement.y, x2, y2];
}
}