toplevel="4";

function browser_chk(){
	if (document.all) {
		navigator.family = "ie4";
	}
	if (window.navigator.userAgent.toLowerCase().match(/gecko/)) {
		navigator.family = "gecko";
	}
	if (window.navigator.userAgent.toLowerCase().indexOf('opera') != -1) {
		navigator.family = "opera";
	}
}

//hides all form control when page loads.
//function init(){
//	if (navigator.family == "ie4"){
//	alert("test");
//	}
//	document.getElementById("select2").style.display = "none";
//	document.getElementById("select3").style.display = "none";
//	document.getElementById("select4").style.display = "none";
//	document.getElementById("select5").style.display = "none";
//}

//hides all other form controls but those on selected tab.
function hide_me(num){
if (num==1|num==6|num==7){
		document.getElementById("select2").style.display = "none";
		document.getElementById("select3").style.display = "none";
		document.getElementById("select4").style.display = "none";
		document.getElementById("select5").style.display = "none";
     	}
	if (num==2){
		document.getElementById("select2").style.display = "block";
		document.getElementById("select3").style.display = "none";
		document.getElementById("select4").style.display = "none";
		document.getElementById("select5").style.display = "none";
     	}
	if (num==3){
		document.getElementById("select2").style.display = "none";
		document.getElementById("select3").style.display = "block";
		document.getElementById("select4").style.display = "none";
		document.getElementById("select5").style.display = "none";
     	}
	if (num==4){
		document.getElementById("select2").style.display = "none";
		document.getElementById("select3").style.display = "none";
		document.getElementById("select4").style.display = "block";
		document.getElementById("select5").style.display = "none";
     	}
	if (num==5){
		document.getElementById("select2").style.display = "none";
		document.getElementById("select3").style.display = "none";
		document.getElementById("select4").style.display = "none";
		document.getElementById("select5").style.display = "block";
     	}
}


//adjusts style of tabs onChange
function DoChanges(num){
	hide_me(num);
	toplevel++;
	var box = "box" + num;
	if (navigator.family == "ie4"){
		document.all[box].style.zIndex = toplevel;
		i=1;
		for (i=1; i<7; i++){
			var mytab="tab" + i;
			if (i == 1) {
				document.all(mytab).className = "tab1";
			}
			else{
			document.all(mytab).className = "tab";
			}
			if (i == num) {
				if (num == 1) {
					document.all(mytab).className = "thistab1";
				}
				else{
					document.all(mytab).className = "thistab";
				}
			}
		}
	}

	if (navigator.family == "opera" || navigator.family == "gecko"){
		document.getElementById(box).style.zIndex = toplevel;
		i=1;
		for (i=1; i<7; i++){
			var mytab="tab" + i;
			if (i == 1) {
				document.getElementById(mytab).className = "tab1";
			}
			else{
				document.getElementById(mytab).className = "tab";
			}
			if (i == num) {
				if (num==1){
					document.getElementById(mytab).className = "thistab1";
				}
				else{	
					document.getElementById(mytab).className = "thistab";
				}
			}
		}
	}
}


//creates menu with current page's link in red.
function red_link(link){
	MultiArray = new Array(11)
	MultiArray [0] = new Array(2)
	MultiArray [0][0] = "http://www.hudsonriver.org/original_hrf.htm"
	MultiArray [0][1] = "Home"

	MultiArray [1] = new Array(2)
	MultiArray [1][0] = "http://www.hudsonriver.org/aboutus.htm"
	MultiArray [1][1] = "About HRF"

	MultiArray [2] = new Array(2)
	MultiArray [2][0] = "http://www.hudsonriver.org/ls/report_search.asp"
	MultiArray [2][1] = "Library Search" 

	MultiArray [3] = new Array(2)
	MultiArray [3][0] = "http://www.hudsonriver.org/cfp.htm"
	MultiArray [3][1] = "Hudson River Fund"

	MultiArray [4] = new Array(2)
	MultiArray [4][0] = "http://www.hudsonriver.org/hrimp.HTM"
	MultiArray [4][1] = "Hudson River Improvement Fund" 

	MultiArray [5] = new Array(2)
	MultiArray [5][0] = "http://www.hudsonriver.org/nycdown.htm"
	MultiArray [5][1] = "New York City Environmental Fund" 

	MultiArray [6] = new Array(2)
	MultiArray [6][0] = "http://www.harborestuary.org/"
	MultiArray [6][1] = "NY/NJ Harbor Estuary Program" 

	MultiArray [7] = new Array(2)
	MultiArray [7][0] = "http://www.harborestuary.org/carp.htm"
	MultiArray [7][1] = "C.A.R.P." 

	MultiArray [8] = new Array(2)
	MultiArray [8][0] = "http://www.hudsonriver.org/education.htm"
	MultiArray [8][1] = "Public Programs"
	
	MultiArray [9] = new Array(2)
	MultiArray [9][0] = "http://www.hudsonriver.org/archive.htm"
	MultiArray [9][1] = "Reports Archive" 
	
	MultiArray [10] = new Array(2)
	MultiArray [10][0] = "http://www.hudsonriver.org/striper_tag.HTM"
	MultiArray [10][1] = "Striped Bass Tagging Program" 
	

	document.write("<table cellpadding='2' border='0'>");
	for (i=0;i<11; i++) {
			if (MultiArray[i][0]==link){
				document.write("<tr><td><a href='"+MultiArray[i][0]+"' title='"+MultiArray[i][1]+"' class='red'>"+MultiArray[i][1]+"</a></td></tr>");
			}
			else{
				document.write("<tr><td><a href='"+MultiArray[i][0]+"' title='"+MultiArray[i][1]+"' class='black'>"+MultiArray[i][1]+"</a></td></tr>");
			}
	}
	document.write("</table>");
}