function prepare_docLinks() {
	if (!document.getElementsByTagName) return false; /*browser object detection*/
	var links = document.getElementsByTagName("a");
	for (var i=0; i<links.length; i++) {
		if (links[i].getAttribute("class") == "openpdf" || links[i].className == "openpdf") {
			links[i].onclick = function() {
				openPDF(this.getAttribute("href"));
				return false;
			}
		}
	}
}

//http://www.quirksmode.org/js/detect.html
var BrowserDetect = {
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
	},
	searchString: function (data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
	},
	dataBrowser: [
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();

function openPDF(imageURL) {
	
	var w = 800;
	var h = 600;
	var myWin_position = "width=770,height=477";
	var my_newWindow = "";
	var my_leftPos = (screen.width) ? (screen.width-w)/2 : 0;
	var my_topPos = (screen.height) ? (screen.height-h)/2 : 0;
	
	var myWin_features = "resizable=1,toolbar=0,location=0,statusbar=0,menubar=0,scrollbars=1,"+"top="+my_topPos+",left="+my_leftPos +","+myWin_position;
	
	if (navigator.platform.indexOf('Win') > -1) {
		my_newWindow = window.open(imageURL,"PopUp",myWin_features);
	} else {
		if (BrowserDetect.browser == "Safari") {
			my_newWindow = window.open(imageURL, '_blank');	
			my_newWindow.focus();
		} else {
			my_newWindow = window.open(imageURL, '_self');
			my_newWindow.focus();
		}

	}

}