var nRows=3;
var nCols=3;

function setISCellImage(r, c, i)
{
	//var cell=
	var tbl = document.getElementById("is");
	var cell = tbl.rows[r].cells[c];
	
	newImage = "url(/img/is/" + cell.className + i + ".png)";
	//cell.innerHTML = i;
	cell.style.backgroundImage= newImage;
}

function iconselect(x, y)
{
	var r;
	var c;
	for (r=0; r<2*nRows+1; r++)
	{
		for (c=0; c<2*nCols+1; c++)
		{
			if (!(r&1) || !(c&1))
        setISCellImage(r, c, "");
		}
	}
	setISCellImage(2*y, 2*x, "TL");
	setISCellImage(2*y, 2*x+1, "T");
	setISCellImage(2*y, 2*x+2, "TR");
	setISCellImage(2*y+1, 2*x, "L");
	setISCellImage(2*y+1, 2*x+2, "R");
	setISCellImage(2*y+2, 2*x, "BL");
	setISCellImage(2*y+2, 2*x+1, "B");
	setISCellImage(2*y+2, 2*x+2, "BR");
	
	if (x!=nCols-1) setISCellImage(2*y+1, nCols*2, "H");
	if (x==nCols-3) setISCellImage(2*y+1, (nCols*2) - 2, "H");
//	var target = document.getElementById("istarget");
	for (r=0; r<nRows*nCols; r++)
	{
		document.getElementById("istarget"+r).style.display='none';
//		target.rows[r].style.display= 'none';
	}
	var target=document.getElementById("istarget"+(x + nCols*y));
        target.style.display='block';
	

}
function isDefault()
{
	//iconselect(0,0);
}

function isInit(iRows, iCols, iX, iY)
{
  nRows=iRows;
  nCols=iCols;
  iconselect(iX, iY);
  
}