// JavaScript Document

function setActiveStyleSheet(title) {
   var i, a, main;
   for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
     if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
       a.disabled = true;
//	   alert(a.getAttribute("title")+ " disabled");
       if(a.getAttribute("title") == title){
		   a.disabled = false;
//		   alert(a.getAttribute("title")+ " enabled");
	   }
     }
   }
}

function switchNewsTabs(tabID){
	if(tabID == 'news-tab'){
		var tabOn = getById(tabID);
		var tabContentOn = getById(tabID+'-content');
		// change tab class and Show that tab content
		tabOn.className = 'news-events-tab-on';
		toggleLayer(tabID+'-content','show');
		// reset other tabs classes and hide their contents
		setTabsAndContents('events-tab','train-tab');
	}
	else if(tabID == 'events-tab'){
		var tabOn = getById(tabID);
		var tabContentOn = getById(tabID+'-content');
		// change tab class and Show that tab content
		tabOn.className = 'news-events-tab-on';
		toggleLayer(tabID+'-content','show');
		// reset other tabs classes and hide their contents
		setTabsAndContents('news-tab','train-tab');
	}
	else if(tabID == 'train-tab'){
		var tabOn = getById(tabID);
		var tabContentOn = getById(tabID+'-content');
		// change tab class and Show that tab content
		tabOn.className = 'news-events-tab-on';
		toggleLayer(tabID+'-content','show');
		// reset other tabs classes and hide their contents
		setTabsAndContents('news-tab','events-tab');
	}
}
function setTabsAndContents(tab1Name, tab2Name){
var tabOff;
var tabContentHide;
	// set tabs off
	tabOff = getById(tab1Name);
	tabOff.className = 'news-events-tab';
	tabOff = getById(tab2Name);
	tabOff.className = 'news-events-tab';
	// hide tabs contents
	tabContentHide = toggleLayer(tab1Name+'-content','hide');
	tabContentHide = toggleLayer(tab2Name+'-content','hide');
}

/* Generic function to Swap image(s).
	Param 1: img object reference (this)
	Param 2: img src to swap to.
*/
function swapHighlightImgTo(imgObj,state){
	var img0 = '/objects/img/hp/buttonBlueOut.gif';
	var img1 = '/objects/img/hp/buttonBlueOn.gif';
	switch(state){
		case 0:
			imgObj.src= img0;
			break;
		case 1:
			imgObj.src= img1;
			break;
		default: break;
	}
	
}