var spEmStepWidth 	= 0.125;	// increase/decrease font every step by spEmStepWidth
var spEmBasis 		= 0.875;		// font size of spArticleBody at startup
//var spEmBasis 		= 1;		// font size of spArticleBody at startup
var spEmStep 		= -1;		// counter for current step (leave as 0)
var spEmMaxSteps 	= 1;		// maximum steps alowed
/**
* spFontSizer increase/decrease font size inside "spEmStep"
*
* use: spFontSizer(1, false), spFontSizer(-1, false) or spFontSizer(0, true)
* @param spInc set to 1 or -1
* @param spReset set to true to get initial font size
*/
function spFontSizer(spInc, spReset) {
// reset font size
if (spReset)
spEmStep = -1;
// inside allowed steps?
if (Math.abs(spEmStep + spInc) <= spEmMaxSteps) {
// increase/decrease spEmStep
spEmStep += spInc;
// set new font size for every tag inside "spEmStep"
spEmFontSize = spEmStep * spEmStepWidth + spEmBasis;
//get spArticleBody
spEmBody = document.getElementById('spMainContent');
//		spEmBody = document.getElementsByTagName('body')[0];
// set new fot size
spEmBody.style.fontSize = spEmFontSize + "em";
}
if (spEmStep == -spEmMaxSteps) {
document.getElementById("spFontsizeMinus").src = "/static/sys/v8/icons/spFontsizeMinus_lo.jpg";
}
else if (spEmStep == spEmMaxSteps) {
document.getElementById("spFontsizePlus").src = "/static/sys/v8/icons/spFontsizePlus_lo.jpg";
}
else {
document.getElementById("spFontsizePlus").src = "/static/sys/v8/icons/spFontsizePlus.jpg";
document.getElementById("spFontsizeMinus").src = "/static/sys/v8/icons/spFontsizeMinus.jpg";
}
} 
/******* Social Bookmarking functions ******/
/**
* toggles SocialBookmark-Box on and off
* @param spDisplay - ture=on, false=off
*/
function spSocialBookmarkSetDisplay(spDisplay) {
spSocialBookmarkElement = document.getElementById("spSocialBookmark").style;
spSocialBookmarkElement.visibility = (spDisplay ? "visible" : "hidden");
spSocialBookmarkState=spDisplay;
}
/**
* toggle function called form Bookmark Link
* served spSocialBookmarkSetDisplay() and starts EventHandler
*/
function spSocialBookmarkToggle() {
if (!spSocialBookmarkState) {
spSocialBookmarkSetDisplay(true);
spStartMouseEvent();
}
else 
spSocialBookmarkSetDisplay(false);
}
/**
* Event handler function tests where the user clicked
* and acts	according to this (switch SocialBookmark-Box off 
* stops EventHandler)
*/
function spSocialBookmarkToggleDisplay(e) {
if (!e) var e = window.event;
if (e.target) targ = e.target;
else if (e.srcElement) targ = e.srcElement;
if (targ.nodeType == 3) // defeat Safari bug
targ = targ.parentNode;
if (targ.id == "spSocialBookmarkLink") {
spStopMouseEvent();
return false;
}
var isInDiv = false;
while(targ != null) {
if (targ.id == "spSocialBookmark") {
isInDiv=true;
break;
}
if (targ.id == "spSocialBookmarkClose")
break;
targ = targ.parentNode;
}
if (!isInDiv) {
spSocialBookmarkSetDisplay(false);
spStopMouseEvent();
}
return false;
}
/**
* starts EventHandling
*/
function spStartMouseEvent(){
if (document.addEventListener) { // DOM Level 2 Event Model
document.addEventListener("mouseup", spSocialBookmarkToggleDisplay, true);
}
else if (document.attachEvent) { // IE 5+ Event Model
document.attachEvent("onmouseup", spSocialBookmarkToggleDisplay);
}
else { // IE 4 Event Model
document.onmouseup=spSocialBookmarkToggleDisplay;
}
}
/**
* stops EventHandling
* spOldHandler is a hack for EI4 Event Model
*/
var spOldHandler = document.onmouseup;	// Eventhandler for EI 4 StopEvent
function spStopMouseEvent() {
// Unregister the capturing event handlers.
if (document.removeEventListener) { // DOM Event Model
document.removeEventListener("mouseup", spSocialBookmarkToggleDisplay, true);
}
else if (document.detachEvent) { // IE 5+ Event Model
document.detachEvent("onmouseup", spSocialBookmarkToggleDisplay);
}
else { // IE 4 Event Model
document.onmouseup = spOldHandler;
}
}
var spTmpImgSetToLoad;
// Muss ausserhalb des spEnhPaginators stehen, da per timeout aufgerufen...
function spLoadDeferImgSet(prefix) {
for (var i=0; i < spTmpImgSetToLoad.length; i++) {
var imgElement=document.getElementById(prefix + i);
if (imgElement != null)
imgElement.src = spTmpImgSetToLoad[i];
}
}