window.onload = function(e) {
	preloadImages();
	externalLinks();
	}

function preloadImages()	{
	var pic1= new Image(220, 38); 
	pic1.src="/images/standard-tab-at.jpg"; 
	var pic2= new Image(227, 38); 
	pic2.src="/images/thorobred-tab-at.jpg"; 
	var pic3= new Image(90, 38); 
	pic3.src="/images/arena-tab-at.jpg"; 
	var pic4= new Image(158, 38); 
	pic4.src="/images/dogtrack-tab-at.jpg"; 
	}

function externalLinks() {
 if (!document.getElementsByTagName) return;
 var anchors = document.getElementsByTagName("a");
 for (var i=0; i<anchors.length; i++) {
   var anchor = anchors[i];
   if (anchor.getAttribute("href") &&	anchor.getAttribute("class") == "out") {
		anchor.target = "_blank";
		}
	}
}

function switch_slider (which, hdr)	{

	// tabs 

	// standard-tab.jpg - standard-tab-at.jpg
	// thorobred-tab.jpg - thorobred-tab-at.jpg
	// arena-tab.jpg - arena-tab-at.jpg
	// dogtrack-tab.jpg - dogtrack-tab-at.jpg
	
	var divs = new Array('standard', 'thorough', 'arena', 'dog');
	var tabs = new Array('standard-tab', 'thorobred-tab', 'arena-tab', 'dogtrack-tab');
	var link_ids = new Array('std_a', 'tho_a', 'are_a', 'dt_a');

	for (x = 0 ; x < divs.length ; x++)	{
	
		if (divs[x] != which)	{
			document.getElementById(divs[x]).style.display = 'none';
			document.getElementById(link_ids[x]).style.backgroundImage = "url(/images/" + tabs[x] + ".jpg)";
			}
		else	{
			document.getElementById(which).style.display = 'block';
			document.getElementById(link_ids[x]).style.backgroundImage = "url(/images/" + tabs[x] + "-at.jpg)";
			}
		
		}
	
	}