var popbackground="white" //specify backcolor or background image for pop window
var windowtitle="WMS Wideband O2 Sensor - "  //pop window title

function detectexist(obj){
return (typeof obj !="undefined")
}

function jkpopimage(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=no,left='+leftpos+',top='+toppos
var bodyattribute=(popbackground.indexOf(".")!=-1)? 'background="'+popbackground+'"' : 'bgcolor="'+popbackground+'"'
if (typeof jkpopwin=="undefined" || jkpopwin.closed)
jkpopwin=window.open("","",winattributes)
else{
getpos() //uncomment these 2 lines if you wish subsequent popups to be centered too
jkpopwin.moveTo(leftpos, toppos)
jkpopwin.resizeTo(popwidth, popheight)
}
jkpopwin.document.open()
jkpopwin.document.write('<html><title>'+windowtitle+''+textdescription+'</title></head><body style="margin : 0px; margin-left : 0px; margin-top : 0px; margin-bottom : 0px"><img src="'+imgpath+'">')
jkpopwin.document.close()
jkpopwin.focus()
}
