function OpenCenteredWindow(theURL,winName,features, myWidth, myHeight, isCenter) { //v3.0
if(window.screen)if(isCenter)if(isCenter=="true"){
var myLeft = (screen.width-myWidth)/2;
var myTop = (screen.height-myHeight)/2;
features+=(features!='')?',':'';
features+=',left='+myLeft+',top='+myTop;
}
pop_n = window.open(theURL,winName,features+((features!='')?',':'')+'width='+myWidth+',height='+myHeight);
}
var pop_n;
function doPopup(theURL,winName,features,myWidth,myHeight,isCenter,img){
if(pop_n) pop_n.close();
winContent='Shady Trails';
winContent+='';
winContent+='
';
winContent+='';
OpenCenteredWindow(theURL,winName,features,myWidth,myHeight,isCenter)
pop_n.document.write(winContent);
pop_n.document.close();
pop_n.focus();
}