function openWindow(width,height,url,name) 
{
	x = (640 - width)/2, y = (480 - height)/2;

	if (screen) {
		y = (screen.availHeight - height)/2;
		x = (screen.availWidth - width)/2;
	}

	name = window.open(url,name,'width='+width+',height='+height+',screenX='+x+',screenY='+y+',top='+y+',left='+x+',scrollbars=yes');
	name.focus();
}


function ChangeCell(cell)
{
	cell.style.cssText = "background: whitesmoke; cursor: hand"
}
function ChangeBack(cell)
{
	cell.style.cssText= ""
}