function initPics(){
	for (var i=1; i<=7; i++){
	normalPics[i]=new Image();
	rolloverPics[i]=new Image();
	}

	normalPics[1].src="./pics/nav_strategie.gif";
	normalPics[2].src="./pics/nav_leistung.gif";
	normalPics[3].src="./pics/nav_vertrieb.gif";
	normalPics[4].src="./pics/nav_konzept.gif";
	normalPics[5].src="./pics/button_up.gif";
	normalPics[6].src="./pics/button_down.gif";
	normalPics[7].src="./pics/button_kontakt.gif";

	rolloverPics[1].src="./pics/nav_strategie_rollover.gif";
	rolloverPics[2].src="./pics/nav_leistung_rollover.gif";
	rolloverPics[3].src="./pics/nav_vertrieb_rollover.gif";
	rolloverPics[4].src="./pics/nav_konzept_rollover.gif";
	rolloverPics[5].src="./pics/button_up_rollover.gif";
	rolloverPics[6].src="./pics/button_down_rollover.gif";
	rolloverPics[7].src="./pics/button_kontakt_rollover.gif";
}

function headIDOf( code){
	if (code==0) return "headNeutral";
	if (code==1) return "headStrategie";
	if (code==2) return "headLeistung";
	if (code==3) return "headVertrieb";
	if (code==4) return "headKonzept";
	if (code==5) return "headNeutral";
}

function containerIDOf( code){
	if (code==1) return "navStrategie";
	if (code==2) return "navLeistung";
	if (code==3) return "navVertrieb";
	if (code==4) return "navKonzept";
	if (code==5) return "buttonUp";
	if (code==6) return "buttonDown";
	if (code==7) return "buttonContact";
}

function contentIDOf( code){
	if (code==0) return "start";
	if (code==1) return "strategie";
	if (code==2) return "leistung";
	if (code==3) return "vertrieb";
	if (code==4) return "konzept";
	if (code==5) return "kontakt";
}

function contentPosMaxOf( code){
	if (code==0) return 400;
	if (code==1) return 370;
	if (code==2) return 190;
	if (code==3) return 30;
	if (code==4) return 160;
	if (code==5) return 0;
}

function drawContent(){
	if (ns){
		document.layers[contentIDOf(content)].top=60-contentPos;
		document.layers[contentIDOf(content)].clip.top=contentPos;
		document.layers[contentIDOf(content)].clip.bottom=contentPos+240;
	}
	else{
		document.all[contentIDOf(content)].style.top=60-contentPos;
		document.all[contentIDOf(content)].style.clip="rect( "+contentPos.toString()+" 365 "+(contentPos+240).toString()+" 0)";
	}
}

function moveContent(){
	contentPos+=scrolling;
	contentPos=Math.max( 0, contentPos);
	contentPos=Math.min( contentPosMax, contentPos);

	drawContent();
	
	if (scrolling!=0) setTimeout( "moveContent()", 80);
}

function scrollDown(){
	scrolling=15;
	moveContent();
}

function scrollUp(){
	scrolling=-15;
	moveContent();
}

function stopScrolling(){
	scrolling=0;
	moveContent();
}

function showContent( code){
	showHead( code);
	contentPos=0;
	contentPosMax=contentPosMaxOf( code);

	if (ns) {document.layers[contentIDOf( content)].visibility="hidden";}
	else {document.all[contentIDOf( content)].style.visibility="hidden";}

	content=code;
	drawContent();
	
	if (ns) {document.layers[contentIDOf( content)].visibility="visible";}
	else {document.all[contentIDOf( content)].style.visibility="visible";}
}

function showHead( code){
	if (ns) {document.layers[headIDOf( head)].visibility="hidden";}
	else {document.all[headIDOf( head)].style.visibility="hidden";}

	head=code;

	if (ns) {document.layers[headIDOf( head)].visibility="visible";}
	else {document.all[headIDOf( head)].style.visibility="visible";}
}

function unhighlight( code){
	if (ns){document.layers[containerIDOf( code)].document.images[0].src=normalPics[code].src;}
	else {document.images[containerIDOf( code)].src=normalPics[code].src;}
}

function highlight( code){
	if (ns){document.layers[containerIDOf( code)].document.images[0].src=rolloverPics[code].src;}
	else {document.images[containerIDOf( code)].src=rolloverPics[code].src;}
}