if (document.images) {
  	 
												           // slides preload
		var slide_01 = new Image();           
		slide_01.src = "images/slide_01.jpg";
		var slide_02 = new Image();           
		slide_02.src = "images/slide_02.jpg";
		var slide_03 = new Image();           
		slide_03.src = "images/slide_03.jpg";
				
		}

	var myPix = new Array("images/slide_01.jpg","images/slide_02.jpg","images/slide_03.jpg")
	var thisPic = 0
	var imgCt = myPix.length - 1

	function chgSlide(direction) {
		if (document.images) {
			thisPic = thisPic + direction
			if (thisPic > imgCt) {
				thisPic = 0
			}
			if (thisPic < 0) {
				thisPic = imgCt
			}
			document.slide_01.src=myPix[thisPic]
		}
	}