var popbackground="lightskyblue" //specify backcolor or background image for pop window
var windowtitle="Image Window" //pop window title
function detectexist(obj){
return (typeof obj !="undefined")
}
function popimage(imgpath, popwidth, popheight, textdescription){
function getpos(){
leftpos=(detectexist(window.screenLeft))? screenLeft+document.body.clientWidth/2-popwidth/2 : detectexist(window.screenX)? screenX+innerWidth/2-popwidth/2 : 0
toppos=(detectexist(window.screenTop))? screenTop+document.body.clientHeight/2-popheight/2 : detectexist(window.screenY)? screenY+innerHeight/2-popheight/2 : 0
if (window.opera){
leftpos-=screenLeft
toppos-=screenTop
}
}
getpos()
var winattributes='width='+popwidth+',height='+popheight+',resizable=yes,left='+leftpos+',top='+toppos
var bodyattribute=(popbackground.indexOf(".")!=-1)? 'background="'+popbackground+'"' : 'bgcolor="'+popbackground+'"'
if (typeof popwin=="undefined" || popwin.closed)
popwin=window.open("","",winattributes)
else{
//getpos() //uncomment these 2 lines if you wish subsequent popups to be centered too
//popwin.moveTo(leftpos, toppos)
popwin.resizeTo(popwidth, popheight+30)
}
popwin.document.open()
popwin.document.write(''+windowtitle+'
'+textdescription+'')
popwin.document.close()
popwin.focus()
}