var agt = navigator.userAgent.toLowerCase();
var ie = agt.indexOf("msie") != -1;
var ns = navigator.appName.indexOf("Netscape") != -1;
var win = (agt.indexOf("win")!=-1) || (agt.indexOf("32bit")!=-1);
var mac = agt.indexOf("mac")!=-1;
var acrobat = new Object({installed:false}, {version:'0,0'});

function checkAcrobat(){
	if (navigator.plugins && navigator.plugins.length){
		for (var x=0; x<navigator.plugins.length; x++){
			if (navigator.plugins[x].description.indexOf('Adobe Acrobat') != -1){
				acrobat.version=parseFloat(navigator.plugins[x].description.split('Version ')[1]);
				if (acrobat.version.toString().length == 1){
					acrobat.version+='.0';
					acrobat.installed=true;
					break;
				}
			}
		}
	}else if (window.ActiveXObject){
		for (x=2; x<10; x++){
			try{
				oAcro=eval("new ActiveXObject('PDF.PdfCtrl."+x+"');");
				if(oAcro){
					acrobat.installed=true;
					acrobat.version=x+'.0';
				}
			}
			catch(e) {}
		}
		try{
			oAcro4=new ActiveXObject('PDF.PdfCtrl.1');
			if (oAcro4){
				acrobat.installed=true;
				acrobat.version='4.0';
			}
		}
		catch(e) {}
		try{
			oAcro7=new ActiveXObject('AcroPDF.PDF.1');
			if (oAcro7){
				acrobat.installed=true;
				acrobat.version='7.0';
			}
		}
		catch(e) {}
	}
	return acrobat.installed;
}