var prevNum = "";
		
function showPic(imgNum) {
	// remove all
	removePic();
	prevNum = imgNum;
	if (document.getElementById){
		// this is the way the standards work
		var style2 = document.getElementById(imgNum).style;
		//style2.display = style2.display? "":"block";
		style2.display = "block";
	}else if (document.all){
		// this is the way old msie versions work
		var style2 = document.all[imgNum].style;
		//style2.display = style2.display? "":"block";
		style2.display = "block";
	}else if (document.layers){
		// this is the way nn4 works
		var style2 = document.layers[imgNum].style;
		//style2.display = style2.display? "":"block";
		style2.display = "block";
	}
}
			
function removePic(){
	if(prevNum != ""){
		if(document.getElementById){
			var style2 = document.getElementById(prevNum).style;
			style2.display = "";
		}else if(document.all){
			var style2 = document.all[prevNum].style;
			style2.display = "";
		}else if(document.layers){
			var style2 = document.layers[prevNum].style;
			style2.display = "";
		}
	}
}
			
function removePicNum(imgNum) {
	// remove all
	removePic();
	prevNum = imgNum;
	if (document.getElementById){
		// this is the way the standards work
		var style2 = document.getElementById(imgNum).style;
		//style2.display = style2.display? "":"block";
		style2.display = "none";
	}else if (document.all){
		// this is the way old msie versions work
		var style2 = document.all[imgNum].style;
		//style2.display = style2.display? "":"block";
		style2.display = "none";
	}else if (document.layers){
		// this is the way nn4 works
		var style2 = document.layers[imgNum].style;
		//style2.display = style2.display? "":"block";
		style2.display = "none";
	}
}