ns=(document.layers);
ie=(document.all);
w3=(document.getElementById && !ie);

function setElement(settleid,show){
	if(ie){                adDiv=eval('document.all.'+settleid+'.style');}
	else if(ns){        adDiv=eval('document.layers["'+settleid+'"]');}
	else if(w3){        adDiv=eval('document.getElementById("'+settleid+'").style');}
	if(show == true){
		showAd();
	}else{
		closeAd();
	}
}

function showAd(){
        if (ie||w3){
        	adDiv.visibility="visible";
        	adDiv.display = "";
        }else{
        	adDiv.visibility ="show";
        }
        if (ie){
       	 documentWidth  =document.body.offsetWidth/2+document.body.scrollLeft-20;
       	 documentHeight =document.body.offsetHeight/2+document.body.scrollTop-20;}
        else if (ns){
       	 documentWidth=window.innerWidth/2+window.pageXOffset-20;
        	documentHeight=window.innerHeight/2+window.pageYOffset-20;}
        else if (w3){documentWidth=self.innerWidth/2+window.pageXOffset-20;
       	 documentHeight=self.innerHeight/2+window.pageYOffset-20;}
        	adDiv.left=documentWidth-310;
        	adDiv.top =documentHeight-160;
}

function closeAd(){
	if (ie||w3){
		adDiv.visibility="hidden";
		adDiv.display="none";
	}else{
		adDiv.visibility ="hide";
	}
}