function popPayPal() {
    
    var winW = 630, winH = 460;

    if (parseInt(navigator.appVersion)>3) {
     if (navigator.appName=="Netscape") {
      winW = window.innerWidth;
      winH = window.innerHeight;
     }
     if (navigator.appName.indexOf("Microsoft")!=-1) {
      winW = document.body.offsetWidth;
      winH = document.body.offsetHeight;
     }
    }

    var leftover = winW - 1024;
    if( leftover < 0 ) {
        leftover = 0;
    }

    var xpos = leftover/2 + 640;
    var pwidth = winW-xpos-10;
    var ypos = 100;
    var pheight = winH-ypos-10;
    
    if(pwidth < 400) {
        pwidth = 400;
    }
    if( pheight < 400) {
        pheight = 400;
    }
    
    mywindow = window.open ("https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=XTB9ZE7RZYHFS", "paypalpop","location=1,status=0,scrollbars=1,width="+pwidth+",height="+pheight);
    mywindow.moveTo(xpos,ypos);
}
/* *** Moved to invite/sonet_utils.js */
function popTwitter() {
	var winW = 630, winH = 460;

    if (parseInt(navigator.appVersion)>3) {
     if (navigator.appName=="Netscape") {
      winW = window.innerWidth;
      winH = window.innerHeight;
     }
     if (navigator.appName.indexOf("Microsoft")!=-1) {
      winW = document.body.offsetWidth;
      winH = document.body.offsetHeight;
     }
    }

    var leftover = winW - 1024;
    if( leftover < 0 ) {
        leftover = 0;
    }

    var xpos = leftover/2 + 640;
    var pwidth = winW-xpos-10;
    var ypos = 100;
    var pheight = winH-ypos-10;
    
    if(pwidth < 400) {
        pwidth = 400;
    }
    if( pheight < 400) {
        pheight = 400;
    }
    
    mywindow = window.open ("http://www.lifecentre.org/invite/oauth", "paypalpop","location=1,status=0,scrollbars=1,width="+pwidth+",height="+pheight);
    mywindow.moveTo(xpos,ypos);
}