/*-------------------------
Rollover
-------------------------*/

function initRollovers() {
	if (!document.getElementById) return
	
	var aPreLoad = new Array();
	var sTempSrc;
	var aImages = document.getElementsByTagName('img');

	for (var i = 0; i < aImages.length; i++) {		
		if (aImages[i].className == 'rollover') {
			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(ftype, '_sw'+ftype);

			aImages[i].setAttribute('hsrc', hsrc);
			
			aPreLoad[i] = new Image();
			aPreLoad[i].src = hsrc;
			
			aImages[i].onmouseover = function() {
				sTempSrc = this.getAttribute('src');
				this.setAttribute('src', this.getAttribute('hsrc'));
			}	
			
			aImages[i].onmouseout = function() {
				if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_over'+ftype, ftype);
				this.setAttribute('src', sTempSrc);
			}
		}
	}
}

window.onload = initRollovers;





// Scroll
var scrollStep = 1;
function scrollToTop() {
   if(navigator.appName == "Microsoft Internet Explorer" && document.compatMode == "CSS1Compat"){
      var ScrollPs = document.body.parentNode.scrollTop;
   }else{
      var ScrollPs = document.body.scrollTop;
   }
   if(scrollStep < 50 && ScrollPs) {
      ScrollPs = (ScrollPs > 2) ? Math.ceil(ScrollPs*.2) : 1;
      scrollStep++;
      scrollBy(0,-ScrollPs);
      setTimeout("scrollToTop()",15);
   }else{
      scrollTo(0,0);
      scrollStep = 1;
   }
}







/* ---------- common library ---------- */



/* ---------- pop up ---------- */

function puWindow(url,nam,wid,hei,prop){
	var offset = 100;
	var w = window.screen.width;
	var h = window.screen.height;
	var l = (w-wid)/2;
	var t = ((h-hei)/2)-offset;
	sty = prop;
	sty+= ",width=";
	sty+= wid;
	sty+= ",height=";
	sty+= hei;
	sty+= ",left=";
	sty+= l;
	sty+= ",top=";
	sty+= t;
	window.open(url,nam,sty);
}

function popup0(url,nam,wid,hei){
	prop = "status=yes,scrollbars=no,resizable=yes";
	puWindow(url,nam,wid,hei,prop);
}

function popup1(url,nam,wid,hei){
	prop = "status=yes,scrollbars=yes,resizable=yes";
	puWindow(url,nam,wid,hei,prop);
}