// JavaScript Document

	var scrollInt;
	var scrTime, scrSt, scrDist, scrDur, scrInt;

	function replaceAnchorLinks(){
		var anchors, i, targ, targarr;
	
		if (!document.getElementById) return;

		// get all anchors
		anchors = document.getElementsByTagName("a");
		
		for (i=0;i<anchors.length;i++){
			// check if href links to an anchor on this page
			if (anchors[i].href.indexOf("#") != -1 && anchors[i].href.indexOf( document.URL ) != -1 ){
				// get name of target anchor
				targ = anchors[i].href.substring( anchors[i].href.indexOf("#")+1 );
				
				// find target anchor
				targarr = document.getElementsByName( targ );
				
				if (targarr.length){
					//anchors[i].className = (targarr[0].offsetTop < anchors[i].offsetTop) ? "up" : "down";
					anchors[i].id = "__" + targ;	// save target as id with prefix (used in onclick function below)
					anchors[i].onmouseup = function () { scrollToAnchor( this.id.substring( 2 ) ); return false; };
					anchors[i].href = "javascript:;";			// rewrite href
				}
			}
		}
	}
	
	
	/*	SCROLL FUNCTIONS  */
	function scrollPage(){
		scrTime += scrInt;
		if (scrTime < scrDur){
			window.scrollTo( 0, easeInOut(scrTime,scrSt,scrDist,scrDur) );
		}else{
			window.scrollTo( 0, scrSt+scrDist );
			clearInterval(scrollInt);
		}
	}
	
	function scrollToAnchor(aname){
		var anchors, i, ele;
	
		if (!document.getElementById) return;
		
		// get anchor
		anchors = document.getElementsByTagName("a");
		for (i=0;i<anchors.length;i++) {
			if (anchors[i].name == aname){
				ele = anchors[i];
				i = anchors.length;
			}
		}
		
		// set scroll target
		if (window.scrollY) scrSt = window.scrollY;
		else if (document.documentElement.scrollTop) scrSt = document.documentElement.scrollTop;
		else scrSt = document.body.scrollTop;
		
		scrDist = ele.offsetTop - scrSt;
		scrDur = 500;
		scrTime = 0;
		scrInt = 10;
		
		// set interval
		clearInterval(scrollInt);
		scrollInt = setInterval( scrollPage, scrInt );
	}
	
	/* EASING FUNCTIONS	*/
	function easeInOut(t,b,c,d){
		return c/2 * (1 - Math.cos(Math.PI*t/d)) + b;
	}
	
	if (window.attachEvent){
		window.attachEvent("onload", replaceAnchorLinks);
	}else{
		window.onload = replaceAnchorLinks;
	}