function zoomIn(URL,hwidth,vheight) { // standard popup for more information
		moreInfo = window.open(URL,"zoom","width=" + hwidth + ",height=" + vheight + ",toolbar=no,location=no,resizable=no,scrollbars=no,top=70,left=100")
		moreInfo.focus ();
	}

function tagLink () {
	for (var i=0; i<arguments.length; i++) {
		var d = document.getElementById(arguments[i]);
		d.style.color = "#000";
	}
}

//preloading buttons
	scroll_left_on = new Image();
	scroll_left_on.src = "/images/scroll_left1.gif";
	scroll_left_off = new Image();
	scroll_left_off.src = "/images/scroll_left0.gif";
	scroll_right_on = new Image();
	scroll_right_on.src = "/images/scroll_right1.gif";
	scroll_right_off = new Image();
	scroll_right_off.src = "/images/scroll_right0.gif";
	scroll_drag_h_on = new Image();
	scroll_drag_h_on.src = "/images/scroll_drag_h1.gif";
	scroll_drag_h_off = new Image();
	scroll_drag_h_off.src = "/images/scroll_drag_h0.gif";

	scroll_up_on = new Image();
	scroll_up_on.src = "/images/scroll_up1.gif";
	scroll_up_off = new Image();
	scroll_up_off.src = "/images/scroll_up0.gif";
	scroll_down_on = new Image();
	scroll_down_on.src = "/images/scroll_down1.gif";
	scroll_down_off = new Image();
	scroll_down_off.src = "/images/scroll_down0.gif";
	scroll_drag_on = new Image();
	scroll_drag_on.src = "/images/scroll_drag1.gif";
	scroll_drag_off = new Image();
	scroll_drag_off.src = "/images/scroll_drag0.gif";

function rollOn(button) {
	if (document.images) {
	document.images[button].src = eval(button + "_on.src");
	}
}

function rollOff(button) {
	if (document.images) {
	document.images[button].src = eval(button + "_off.src");
	}
}