var elem_divEmeraldBaseLeft,elem_divEmeraldBaseRight;
var elem_imgEmeraldBaseLeft,elem_imgEmeraldBaseRight;

function SetEmeralds()
  {
  elem_divEmeraldBaseLeft = document.getElementById('divEmeraldBaseLeft');
  elem_imgEmeraldBaseLeft = document.getElementById('imgEmeraldBaseLeft');
  elem_divEmeraldBaseRight = document.getElementById('divEmeraldBaseRight');
  elem_imgEmeraldBaseRight = document.getElementById('imgEmeraldBaseRight');
  
  elem_divEmeraldBaseLeft.style.left = 4 +'px';
  //alert(''+ window.innerWidth); // E.g. "1024".
  //alert(''+ elem_imgEmeraldBaseRight.width);
  elem_divEmeraldBaseRight.style.left = (window.innerWidth - elem_imgEmeraldBaseRight.width - 4) +'px';
  //alert(''+ elem_divEmeraldBaseLeft.style.left);
  var emeraldLeftLf = noPx(elem_divEmeraldBaseLeft.style.left);
  //alert(''+ elem_imgEmeraldBaseLeft.width); // E.g. "124".
  var emeraldLeftWid = elem_imgEmeraldBaseLeft.width;
  var emeraldRightLf = noPx(elem_divEmeraldBaseRight.style.left);
  //alert(''+ emeraldLeftLf);
  //alert(''+ emeraldLeftWid); // E.g. "124".
  //alert(''+ emeraldRightLf);
  var emeraldsGap = emeraldRightLf - (emeraldLeftLf + emeraldLeftWid);
  //alert(''+ emeraldsGap);
  //alert(''+ elem_divEmeraldBaseRight.style.left);
  elem_divEmeraldBaseLeft.style.top = (window.innerHeight + 15 - 126) +'px';
  elem_divEmeraldBaseRight.style.top = (window.innerHeight - 21 - 107) +'px';
  //alert(''+ window.innerHeight);
  //alert(''+ elem_divEmeraldBaseLeft.style.top);
  elem_divEmeraldBaseLeft.style.position = 'fixed';
  elem_divEmeraldBaseRight.style.position = 'fixed';
  }

function noPx(str)
  {
  var chr = String.fromCharCode(112); // "p" from "px" (code for pixels).
  //alert("chr="+ chr);
  var posn = str.indexOf(chr); // Stas @ posn 0.
  //var posn = str.lastIndexOf(chr) + 1; // Stas @ posn 0.
  //alert( "str.length="+ str.length );
  var numOnly = eval( str.substring(0,posn) );
  //alert("numOnly="+ numOnly);
  return numOnly;
  }