smallSizes = new Array(77,77);
mediumSizes = new Array(200,170);
pageName = 'sands.htm';
scriptName = 'sands.js';
countX = 3;
countY = 2;

// sections: name, small images path, medium images path, big images path
// images: name, src, big width, big height
var arImages = new Array(
  new Array('Sands','images/portfolio/small/','images/portfolio/medium/','images/portfolio/big/',
    new Array(
      new Array('# 30 Silica Sand',' 30 Silica Sand.jpg',251,245),
      new Array('#3 Silica Sand','3 Silica Sand.jpg',249,249),
      new Array('Concrete Sand','Concrete Sand.jpg',246,246),
      new Array('Silica Mason Sand (#530)','Silica Mason Sand 530.jpg',246,249),
      new Array('Washed Mason Sand','Washed Mason Sand.jpg',247,249)
    )
  )
)

section = getParameter(self.document.location.href, 'section');
if (isNaN(section) || (section=='') || (section<0) || (section>arImages.length))
  section = 0; 

ind = getParameter(self.document.location.href, 'ind');
if (isNaN(ind) || (ind=='') || (ind<0) || (ind>arImages[section][4].length))
  ind = 0; 

var arPreloadImages = new Array();
function preload() {
  if (arImages[section][2]!='') {
    for (i=ind;(i<(Number(ind)+Number(countX*countY))) && (i<arImages[section][4].length);i++) {
      arPreloadImages[i] = new Image(mediumSizes[0],mediumSizes[1]);
      arPreloadImages[i].src = arImages[section][2]+arImages[section][4][i][1];
    }
  }
}
  
function showImageMedium(number) {
  showImage('imagemedium',arImages[section][2]+arImages[section][4][number][1]);
  showMessage('imagemediumname',arImages[section][4][number][0]);
}

function showImageBig(number) {
  showImagePopup(scriptName,section,number,arImages[section][4][number][2],
   arImages[section][4][number][3]);
}