/**
 * home.js
 * scripts used on the ianritchiearchitects.co.uk home page
 */

/* image caching */
var imageFilesOn = new Array();
imageFilesOn[1] = 'images/ind_symbol.jpg';
imageFilesOn[2] = 'images/ind_oberhausen.jpg';
imageFilesOn[3] = 'images/ind_reina.jpg';
imageFilesOn[4] = 'images/ind_steel.jpg';
imageFilesOn[5] = 'images/ind_quote01.gif';
imageFilesOn[6] = 'images/ind_carnuntum.jpg';
imageFilesOn[7] = 'images/ind_quote12.gif';
imageFilesOn[8] = 'images/ind_terrasson.jpg';
imageFilesOn[9] = 'images/ind_quote02.gif';
imageFilesOn[10] = 'images/ind_concert.jpg';
imageFilesOn[11] = 'images/ind_quote08.gif';
imageFilesOn[12] = 'images/ind_book.jpg';
imageFilesOn[13] = 'images/ind_home.jpg';
imageFilesOn[14] = 'images/ind_alba.jpg';
imageFilesOn[15] = 'images/ind_quote11.gif';
imageFilesOn[16] = 'images/ind_mirrors.jpg';
imageFilesOn[17] = 'images/ind_quote04.gif';
imageFilesOn[18] = 'images/ind_fly.jpg';
imageFilesOn[19] = 'images/ind_quote03.gif';
imageFilesOn[20] = 'images/ind_rsc-theatre.jpg';
imageFilesOn[21] = 'images/ind_oberhausen_cone.jpg';
imageFilesOn[22] = 'images/ind_quote05.gif';
imageFilesOn[23] = 'images/ind_concrete.jpg';
imageFilesOn[24] = 'images/ind_quote09.gif';
imageFilesOn[25] = 'images/ind_vents.jpg';
imageFilesOn[26] = 'images/ind_quote06.gif';
imageFilesOn[27] = 'images/ind_magna.jpg';
imageFilesOn[28] = 'images/ind_quote10.gif';
imageFilesOn[29] = 'images/ind_regatta.jpg';
imageFilesOn[30] = 'images/ind_quote07.gif';
imageFilesOn[31] = 'images/ind_quote13.gif';
imageFilesOn[32] = 'images/ind_quote14.gif';
imageFilesOn[33] = 'images/ind_quote15.gif';
imageFilesOn[34] = 'images/ind_quote16.gif';
imageFilesOn[35] = 'images/ind_quote17.gif';
imageFilesOn[36] = 'images/ind_quote18.gif';
imageFilesOn[37] = 'images/ind_quote19.gif';
imageFilesOn[38] = 'images/ind_quote20.gif';
imageFilesOn[39] = 'images/ind_spire.jpg';
imageFilesOn[40] = 'images/ind_plymouth.jpg';
imageFilesOn[41] = 'images/ind_quote21.gif';
imageFilesOn[42] = 'images/ind_sidings.jpg';
imageFilesOn[43] = 'images/ind_wood-lane.jpg';
imageFilesOn[44] = 'images/ind_quote22.gif';
imageFilesOn[45] = 'images/ind_quote23.gif';
imageFilesOn[46] = 'images/ind_quote24.gif';
imageFilesOn[47] = 'images/ind_quote25.gif';
imageFilesOn[48] = 'images/ind_quote26.gif';
imageFilesOn[49] = 'images/ind_quote27.gif';
imageFilesOn[50] = 'images/ind_quote28.gif';
imageFilesOn[51] = 'images/ind_quote29.gif';
imageFilesOn[52] = 'images/ind_quote30.gif';

var imageFilesOff = new Array();
imageFilesOff[1] = 'images/dotanim1.gif';
imageFilesOff[2] = 'images/dotanim2.gif';
imageFilesOff[3] = 'images/dotanim3.gif';
imageFilesOff[4] = 'images/dotanim4.gif';

var imageOn = new Array();
var imageOff = new Array();

window.onload = function()
{
		/* add news link text */
		writeNewsLink();
		/* pre-fetch images for rollovers */
		if (document.images) {
        for (var i = 1; i <= imageFilesOn.length; i++) {
            imageOn[i] = new Image(193, 249);
            imageOn[i].src = imageFilesOn[i];
        }
        for (var i = 1; i <= imageFilesOff.length; i++) {
            imageOff[i] = new Image(193, 249);
            imageOff[i].src = imageFilesOff[i];
        }
    }
}
function imgAct(idx){
    if (document.images) {
		    /* check to see if the image is cached yet */
		    if (imageOn[idx].complete) {
            document.images["img"+idx].src = imageOn[idx].src;
				} else {
				    /* image not cached - set src property to replacement */
            document.images["img"+idx].src = imageFilesOn[idx];
				}
    }
}
function imgInact(idx, repl_idx){
    if (document.images) {
		    /* check to see if the image is cached yet */
		    if (imageOff[repl_idx].complete) {
            document.images["img"+idx].src = imageOff[repl_idx].src;
				} else {
				    /* image not cached - set src property to replacement */
            document.images["img"+idx].src = imageFilesOff[repl_idx];
				}
    }
}