var intro1 = false;
var marketstats1 = false;
var sponsoring1 = false;
var adrates1 = false;

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 preloadImages() {
	if (document.images) {
		intro_over = newImage("images/intro_over.gif");
		intro_down = newImage("images/intro_down.gif");
		intro_over008 = newImage("images/intro_over-08.gif");
		intro_down009 = newImage("images/intro_down-09.gif");
		marketstats_down = newImage("images/market-stats_down.gif");
		marketstats_over = newImage("images/market-stats_over.gif");
		marketstats_down013 = newImage("images/market-stats_down-13.gif");
		marketstats_over014 = newImage("images/market-stats_over-14.gif");
		marketstats_down015 = newImage("images/market-stats_down-15.gif");
		sponsoring_down = newImage("images/sponsoring_down.gif");
		sponsoring_over = newImage("images/sponsoring_over.gif");
		sponsoring_down019 = newImage("images/sponsoring_down-19.gif");
		sponsoring_over020 = newImage("images/sponsoring_over-20.gif");
		sponsoring_down021 = newImage("images/sponsoring_down-21.gif");
		adrates_down = newImage("images/ad-rates_down.gif");
		adrates_over = newImage("images/ad-rates_over.gif");
		adrates_down025 = newImage("images/ad-rates_down-25.gif");
		preloadFlag = true;
		}
		
	sPath = document.location.pathname;
	switch (sPath) {
	 case "/sponsors/welcome.shtm": {
	    changeImages('intro', 'images/intro_over.gif');
	    intro1 = true;
	    break;
	  }
	  case "/sponsors/statistic.shtm": {
	    changeImages('marketstats', 'images/market-stats_over.gif');
	    marketstats1 = true;
	    break;
	  }
	  case "/sponsors/sponsorship.shtm": {
	    changeImages('sponsoring', 'images/sponsoring_over.gif');
	    sponsoring1 = true;
	    break;
	  }
	  case "/sponsors/rates.shtm": {
	    changeImages('adrates', 'images/ad-rates_over.gif');
	    adrates1 = true;
	    break;
	  }
	}   
}