// global.js
// Global javascript functions for LIFE-IC website

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadHeaderImages() {
	if (document.images) {
		hdr_what_top_over = newImage("/life/images/hdr_what_top-over.gif");
		hdr_comp_top_hdr_what_top_over = newImage("/life/images/hdr_comp_top-hdr_what_top_o.gif");
		hdr_comp_top_hdr_peop_top_over = newImage("/life/images/hdr_comp_top-hdr_peop_top_o.gif");
		hdr_peop_top_over = newImage("/life/images/hdr_peop_top-over.gif");
		hdr_res_top_hdr_peop_top_over = newImage("/life/images/hdr_res_top-hdr_peop_top_ov.gif");
		hdr_comp_btm_over = newImage("/life/images/hdr_comp_btm-over.jpg");
		hdr_res_btm_over = newImage("/life/images/hdr_res_btm-over.jpg");
		hdr_x1_top_over = newImage("/life/images/hdr_x1_top-over.gif");
		hdr_x2_btm_over = newImage("/life/images/hdr_x2_btm-over.jpg");
		preloadFlag = true;
	}
}

preloadHeaderImages();

function mouseOverHandler(section) {
  switch (section) {
    case 1 :
      changeImages('hdr_what_top', '/life/images/hdr_what_top-over.gif'); return true;
      break;
    case 2 :
      changeImages('hdr_comp_btm', '/life/images/hdr_comp_btm-over.jpg'); return true;
      break;
    case 3 :
      changeImages('hdr_peop_top', '/life/images/hdr_peop_top-over.gif'); return true;
      break;
    case 4 :
      changeImages('hdr_res_btm', '/life/images/hdr_res_btm-over.jpg'); return true;
      break;
    case 5 :
      changeImages('hdr_x1_top', '/life/images/hdr_x1_top-over.gif'); return true;
      break;
    case 6 :
      changeImages('hdr_x2_btm', '/life/images/hdr_x2_btm-over.jpg'); return true;
      break;
  }
}

function mouseOutHandler(section) {
  switch (section) {
    case 1 :
      changeImages('hdr_what_top', '/life/images/hdr_what_top.gif'); return true;
      break;
    case 2 :
      changeImages('hdr_comp_btm', '/life/images/hdr_comp_btm.jpg'); return true;
      break;
    case 3 :
      changeImages('hdr_peop_top', '/life/images/hdr_peop_top.gif'); return true;
      break;
    case 4 :
      changeImages('hdr_res_btm', '/life/images/hdr_res_btm.jpg'); return true;
      break;
    case 5 :
      changeImages('hdr_x1_top', '/life/images/hdr_x1_top.gif'); return true;
      break;
    case 6 :
      changeImages('hdr_x2_btm', '/life/images/hdr_x2_btm.jpg'); return true;
      break;
  }
}