/*******************************************************************************
	AUTHOR:		Timothy Higgins
	CONTACT:	timothymichaelhiggins@gmail.com
	
	index.php functions.
*******************************************************************************/

	//Define variables, set promotion change interval.
	var holdPromo=false;
	setInterval("if(!holdPromo) nextPromo()",4000);
	setTimeout("nextPromo()",500);

	/***************************************************************************
		Advance to the next promotion.
	***************************************************************************/
	function nextPromo(){
		if(activePromo<promos.length-1)
			activePromo++;
		else
			activePromo=0;
		document.getElementById("promo").src="promo/"+promos[activePromo]+".jpg";
		document.getElementById("promoInfo").href="promo.php?id="+promos[activePromo];
	}
	
	/***************************************************************************
		Return to the previous promotion.
	***************************************************************************/
	function previousPromo(){
		if(activePromo>0)
			activePromo--;
		else
			activePromo=promos.length-1;
		document.getElementById("promo").src="promo/"+promos[activePromo]+".jpg";
		document.getElementById("promoInfo").href="promo.php?id="+promos[activePromo];
	}