How do i convert pixcel coordinates to table coordinates

[Adi5402]

My table is positioned relative and iv got an absolute ball floatng over it i need the ball to interact with the table so i need some hting which can tell me exactly which table row and colum the ball is over can some one help

[Kor]

I think you can use some values to find the absolute position and dimentions of an element (table, row, cell...) with a certain id

document.getElementById(id).offsetLeft
document.getElementById(id).offsetTop
document.getElementById(id).offsetWidth
document.getElementById(id).offsetHeight

[Adi5402]

Ya i guess it might work but will that help me get value of i because im going to use a if statement with tdarray[i] to check the table cells.

[Kor]

that use getElementsByTagName

document.getElementsByTagName('td')[i].offsetLeft

and so on....

[Adi5402]

iv got the following ccode so far but it ant detecting the right code ill upload the files and post alink within the hour

objball = document.getElementById("ball");
var ox =objball.offsetLeft;
var oy =objball.offsetTop;

if (ox%20==0)
{
rn = (ox - 20)/20;
}

if(oy%5 == 0)
{
cn = ((oy-5)/5)-5;

i = ((rn)*21)+(cn+1);
//alert(i);
}

if (obj2[(rn*21)+cn].className=='brick3' )
{
obj2[(rn)*21+(cn)].setAttribute('id', 'brick2' );
}
//this detects the bricks but some ones on the side iv got 21 colums and 50 rows