//Detect Browser Type.
var agt=navigator.userAgent.toLowerCase();
var appVer = navigator.appVersion.toLowerCase();
var is_minor = parseFloat(appVer);
var is_major = parseInt(is_minor);
var iePos  = appVer.indexOf('msie');
if (iePos !=-1) {
  is_minor = parseFloat(appVer.substring(iePos+5,appVer.indexOf(';',iePos)));
  is_major = parseInt(is_minor);
}
var isMinNS4 = ((navigator.appName.indexOf("Netscape") >= 0 || agt.indexOf("gecko") >= 0) && is_major >= 3) ? true : false;
var isMinNS6 = (agt.indexOf("gecko") >=0 && is_major >= 3) ? true : false;
var isMinIE4 = (document.all) ? true : false;
var isMinIE5 = (isMinIE4==1 && is_major >= 6) ? true : false;
var isMinIE6 = (isMinIE4 && is_major >= 7) ? true : false;
var isDOM = (document.getElementById) ? true : false;
var isSafari = (agt.indexOf("safari") != -1) ? true : false
var isOpera = (agt.indexOf("opera") != -1) ? true : false
var isIE = (isMinIE4 || isMinIE5 ||  isMinIE6);
var isNN = (isMinNS4 || isMinNS6 );

/**
 Returns a single named DOM element or null if not found.
 @param elementName String _ID_ of element you want to retrieve
 @return element if found or null.
*/
function get(elementName) {
  var ret = null;
  var tm=20; 
  var sp=11;
  if (isDOM == 1) {
    if(document.getElementById(elementName)) {
      ret = document.getElementById(elementName);
    }
  }  else if (isMinIE4 == 1) {
    if(document.all(elementName)[0]) {
      ret = document.all(elementName)[0];
    }  else {
      ret = document.all(elementName);
    }
  }
  return ret;
}

	
function showContent(divId)
{
	for(j=1;j<=3;j++)
	{
		showDiv = eval("get('div"+j+"')");
		showImg = eval("document.Image"+j)

		showImg.src='images/'+j+'b.jpg';

		if(j==divId)
		{
			showDiv.style.display='inline';
		} 
		if(j!=divId) {
			showDiv.style.display='none';
		}
	}
	
	if(divId==1)
	{
		document.Image1.src='images/1b-on.jpg';
		document.Image2.src='images/2b-l.jpg';
	}
	if(divId==2)
	{
		document.Image2.src='images/2b-on.jpg';
		document.Image3.src='images/3b-l.jpg';
	}
	if(divId==3)
	{
		document.Image2.src='images/2b-r.jpg';
		document.Image3.src='images/3b-on.jpg';
	}

}

function MM_preloadImages() 
{
	var d=document; 
	if(d.images)
	{ 
  	if(!d.MM_p) d.MM_p=new Array();
	var i,j=d.MM_p.length,a=MM_preloadImages.arguments; 
	for(i=0; i<a.length; i++)
		if (a[i].indexOf("#")!=0)
		{ 
			d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];
		}
	}
}