// JavaScript Document
var maxW,maxH,fromX,fromY,toX,toY,adjX,adjY,zBox,zStep=0,zLink,zNew;

function zoomBox(evt,zlink,maxw,maxh,tox,toy) {
	if (arguments.length > 2) zNew=1;
	
	scrollH=(window.pageYOffset!=null)?window.pageYOffset:document.body.scrollTop;
	maxW=maxw?maxw:window.innerWidth?innerWidth:document.body.clientWidth;
	maxH=maxh?maxh:window.innerHeight?innerHeight:document.body.clientHeight;
	toX=tox?tox:0;
	toY=(toy?toy:0)+scrollH;
	fromX=evt.pageX?evt.pageX:evt.clientX;
	fromY=(evt.pageY?evt.pageY:evt.clientY)+(document.all?scrollH:0);
	adjX=toX+evt.screenX-fromX;
	adjY=toY+evt.screenY-fromY;
	
	if (document.createElement && document.body.appendChild && !zBox) {
		zBox=document.createElement("div");
		zBox.style.position="absolute";
		document.body.appendChild(zBox);
	} else if (document.all && !zBox) {
		document.all[document.all.length-1].outerHTML+='<div id="zBoxDiv" style="position:absolute"></div>';
		zBox=document.all.zBoxDiv;
	} else if (document.layers && !zBox) {
		zBox=new Layer(maxW);
		zBox.style=zBox;
	}
	
	zLink=zlink;
	doZoom();
}

function doZoom() {
	zStep+=1;
	zPct=(10-zStep)/10;
	
	if (document.layers) {
		zBox.moveTo(toX+zPct*(fromX-toX),toY+zPct*(fromY-toY));
		zBox.document.open();
		zBox.document.write("<table width='"+maxW*(1-zPct)+"' height="+maxH*(1-zPct)+" border=2 cellspacing=0><tr><td></td></tr></table>");
		zBox.document.close();
	} else {
		zBox.style.border="2px solid #999999";
		zBox.style.left=toX+zPct*(fromX-toX);
		zBox.style.top=toY+zPct*(fromY-toY);
		zBox.style.width=maxW*(1-zPct);
		zBox.style.height=maxH*(1-zPct);
	}
	
	zBox.style.visibility="visible";
	
	if (zStep < 10) setTimeout("doZoom("+fromX+","+fromY+","+toX+","+toY+")",30);
	else {
		zBox.style.visibility='hidden';
		zStep=0;
		if (zLink && !zNew) location.href=zLink.href;
		else if (zLink && zNew) {
			var w=window.open(zLink.href,'','width='+maxW+',height='+maxH+',left='+adjX+',top='+adjY+'');
			zNew=null;
		}
	}
}