/* General porpoise Javascript library 

Contains various useful Javascript functions:

1. Attaches a new window to any link with rel="external"
2. Stripe table rows by giving them class 'striped' and will apply cssclasses 'odd' and 'even'

*/



/*  
Simon Martin
Link to this script
Give each table that needs alternating rows a class of striped and make sure it has an ID
*/

addEvent(window, "load", striping_init);

function striping_init() {
	// Find all tables with class sortable and make them sortable
	if (!document.getElementsByTagName) return;
	tbls = document.getElementsByTagName("table");
	for (ti=0;ti<tbls.length;ti++) {
		thisTbl = tbls[ti];
		if (((' '+thisTbl.className+' ').indexOf("striped") != -1) && (thisTbl.id)) {
			alternate(thisTbl);
		}
	}
}

function addEvent(elm, evType, fn, useCapture)
// addEvent and removeEvent
// cross-browser event handling for IE5+,	NS6 and Mozilla
// By Scott Andrew
{
	if (elm.addEventListener){
		elm.addEventListener(evType, fn, useCapture);
		return true;
	} else if (elm.attachEvent){
		var r = elm.attachEvent("on"+evType, fn);
		return r;
	} else {
		alert("Handler could not be removed");
	}
}

function alternate(table) {
	// Take object table and get all it's tbodies.
	var tableBodies = table.getElementsByTagName("tbody");
	// Loop through these tbodies
	for (var i = 0; i < tableBodies.length; i++) {
		// Take the tbody, and get all it's rows
		var tableRows = tableBodies[i].getElementsByTagName("tr");
		// Loop through these rows
		// Start at 1 because we want to leave the heading row untouched
		for (var j = 0; j < tableRows.length; j++) {
			// Check if j is even, and apply classes for both possible results
			if ( (j % 2) == 0  ) {
				if ( !(tableRows[j].className.indexOf('odd') == -1) ) {
					tableRows[j].className = tableRows[j].className.replace('odd', 'even');
				} else {
					if ( tableRows[j].className.indexOf('even') == -1 ) {
						tableRows[j].className += " even";
					}
				}
			} else {
				if ( !(tableRows[j].className.indexOf('even') == -1) ) {
					tableRows[j].className = tableRows[j].className.replace('even', 'odd');
				} else {
					if ( tableRows[j].className.indexOf('odd') == -1 ) {
						tableRows[j].className += " odd";
					}
				}
			} 
		}
	}
}





/*
JSTarget function by Roger Johansson, www.456bereastreet.com
*/
var JSTarget = {
	init: function(att,val,warning) {
		if (document.getElementById && document.createElement && document.appendChild) {
			var strAtt = ((typeof att == 'undefined') || (att == null)) ? 'class' : att;
			var strVal = ((typeof val == 'undefined') || (val == null)) ? 'non-html' : val;
			var strWarning = ((typeof warning == 'undefined') || (warning == null)) ? ' (opens in a new window)' : warning;
			var oWarning;
			var arrLinks = document.getElementsByTagName('a');
			var oLink;
			var oRegExp = new RegExp("(^|\\s)" + strVal + "(\\s|$)");
			for (var i = 0; i < arrLinks.length; i++) {
				oLink = arrLinks[i];
				if ((oLink.getAttribute('target') == '_blank')||(strAtt == 'class') && (oRegExp.test(oLink.className)) || (oRegExp.test(oLink.getAttribute(strAtt)))) {
				  if ((oLink.getAttribute('href').search(/pdf/gi) == -1)&& 
				      (oLink.getAttribute('href').search(/doc/gi) == -1)&&
				      (oLink.getAttribute('href').search(/xls/gi) == -1)&&
					  (oLink.getAttribute('href').search(/rtf/gi) == -1)&&
				      (oLink.getAttribute('href').search(/mailto/gi) == -1)){
				  
					oWarning = document.createElement("img");
					oWarning.setAttribute('src',warning);
					oWarning.setAttribute('alt','(opens in new window)');
					oWarning.setAttribute('title','(link opens in new window)');
					oWarning.setAttribute('class','nwIco')
					oWarning.setAttribute('border','0')
					oLink.appendChild(oWarning);
					}
					try{
					   oLink.removeAttribute('target');
					   //Find and remove multitrack onclick events
					   if (oLink.getAttribute('onclick') !== null){
					     var oLinkC = oLink.getAttribute('onclick').substring(0,13);
					     if (oLinkC == "dcsMultiTrack"){
                   oLink.removeAttribute('onclick'); 
                }
              }
          }
          catch(err){
            //do nothing
          }
					oLink.onclick = JSTarget.openWin;
				}
			}
			oWarning = null;
		}
	},
	openWin: function(e) {
		var event = (!e) ? window.event : e;
		if (event.shiftKey || event.altKey || event.ctrlKey || event.metaKey) return true;
		else {
		    var oWin = window.open(this.getAttribute('href'), '_blank');
			if (oWin) {
				if (oWin.focus) oWin.focus();
				return false;
			}
			oWin = null;
			return true;
		}
	},
	/*
	addEvent function from http://www.quirksmode.org/blog/archives/2005/10/_and_the_winner_1.html
	*/
	addEvent: function(obj, type, fn) {
		if (obj.addEventListener)
			obj.addEventListener(type, fn, false);
		else if (obj.attachEvent) {
			obj["e"+type+fn] = fn;
			obj[type+fn] = function() {obj["e"+type+fn]( window.event );}
			obj.attachEvent("on"+type, obj[type+fn]);
		}
	}
};
JSTarget.addEvent(window, 'load', function(){JSTarget.init('rel','external','/global/img/iconize/icon_new_window.gif');});