function changeFormImpacts(doChain) {
	var year = document.options.year.value;
	var month = document.options.month.value;
	var form_year = document.getElementById('form_year')
	var form_month = document.getElementById('form_month')
	var go = document.getElementById('go')
	var locale = location.href
	var finder = locale.search('impacts/')
/*	if(year=='' && month==''){
		var y = getURLVar('y')
		var m = getURLVar('m')
		if(y!='' && m!=''){
			year = y
			month = m
			document.options.year.value = year
			document.options.month.value = month
			doChain = 'y'
			changeTextImpacts();
		}
	}*/
	if(finder>-1 && year=='' && month==''){
		month = locale.substring((locale.length-10),(locale.length-8))
		year = locale.substring((locale.length-7),(locale.length-5))
	}
	if (doChain=="y"){
		if (year=='94'){
			$('#form_month')
				.item([
					{month_selector:'<h3>Month</h3><select name="month" onChange = "changeFormImpacts();"><option value="" selected></option><option value="10">October</option><option value="11">November</option><option value="12">December</option></select>'}
					])
				.chain();
		}
		else if(year=='96'){
			$('#form_month')
				.item([
					{month_selector:'<h3>Month</h3><select name="month" onChange = "changeFormImpacts();"><option value="" selected>&nbsp;</option><option value="01">January</option><option value="02">February</option><option value="03">March</option><option value="04">April</option><option value="05">May</option><option value="06">June</option><option value="07">July</option><option value="08">August</option><option value="09">September</option><option value="11">November</option><option value="12">December</option></select>'}
					])
				.chain();
		}
		else if(year=='06'){
			$('#form_month')
				.item([
					{month_selector:'<h3>Month</h3><select name="month" onChange = "changeFormImpacts();"><option value="" selected>&nbsp;</option><option value="01">January</option><option value="02">February</option><option value="03">March</option><option value="04">April</option><option value="05">May</option><option value="06">June</option></select>'}
					])
				.chain();
		}
		else if(year=='07'){
			$('#form_month')
				.item([
					{month_selector:'<h3>Month</h3><select name="month" onChange = "changeFormImpacts();"><option value="" selected>&nbsp;</option><option value="09">September</option><option value="10">October</option><option value="11">November</option><option value="12">December</option></select>'}
					])
				.chain();		
		}
		else if(year=='09'){
			$('#form_month')
				.item([
					{month_selector:'<h3>Month</h3><select name="month" onChange = "changeFormImpacts();"><option value="" selected>&nbsp;</option><option value="01">January</option><option value="02">February</option><option value="03">March</option><option value="04">April</option><option value="05">May</option><option value="06">June</option><option value="07">July</option><option value="08">August</option><option value="09">September</option><option value="10">October</option></select>'}
					])
				.chain();
		}
		else if(year){
			$('#form_month')
				.item([
					{month_selector:'<h3>Month</h3><select name="month" onChange = "changeFormImpacts();"><option value="" selected>&nbsp;</option><option value="01">January</option><option value="02">February</option><option value="03">March</option><option value="04">April</option><option value="05">May</option><option value="06">June</option><option value="07">July</option><option value="08">August</option><option value="09">September</option><option value="10">October</option><option value="11">November</option><option value="12">December</option></select>'}
					])
				.chain();
		}
	}
	if(finder>-1){
		document.options.year.value = year
		document.options.month.value = month
	}
/*	if(y!='' && m!=''){
		document.options.month.value = month
	}*/
	if(year){
		form_year.style.display = 'block';
		form_month.style.display = 'block';
	}
	else{
		form_year.style.display = 'block';
		form_month.style.display = 'none';
		go.style.display = 'none';
	}
	if (year && month){
		go.style.display = 'block';
	}
	else {
		go.style.display = 'none';
	}
}

function changeTextImpacts() {
	changeFormImpacts('n');
	var year = document.options.year.value;
	var month = document.options.month.value;
	var locale = location.href
	var finder = locale.search('impacts/')
	if(year!='' && month!='' && finder!=-1){
		filename = 'Impacts_'+month+'-'+year+'.html'
	}
	else{
		filename = 'impacts/Impacts_'+month+'-'+year+'.html'
	}
	document.options.action = filename
	document.options.submit();
}


function relevantLinks() {
    var rl_mmyy = document.getElementById('rl_mmyy').value;
    var rl_month = rl_mmyy.substring(0,2);
    var rl_year = rl_mmyy.substring(2,4);
    var rl_monthname = "";
    var rl_yearfull = "";
    var rl_seasonal = "";
    var rl_seasonalmonths = "";
    var rl_graphics = "";
    var rl_content = "";

    if(rl_month=="01") {
	rl_monthname = "January";
    } else if(rl_month=="02") {
	rl_monthname = "February";
	rl_seasonal = "Winter";
	rl_seasonalmonths = "DJF";
    } else if(rl_month=="03") {
	rl_monthname = "March";
    } else if(rl_month=="04") {
	rl_monthname = "April";
    } else if(rl_month=="05") {
	rl_monthname = "May";
	rl_seasonal = "Spring";
	rl_seasonalmonths = "MAM";
    } else if(rl_month=="06") {
	rl_monthname = "June";
    } else if(rl_month=="07") {
	rl_monthname = "July";
    } else if(rl_month=="08") {
	rl_monthname = "August";
	rl_seasonal = "Summer";
	rl_seasonalmonths = "JJA";
    } else if(rl_month=="09") {
	rl_monthname = "September";
    } else if(rl_month=="10") {
	rl_monthname = "October";
    } else if(rl_month=="11") {
	rl_monthname = "November";
	rl_seasonal = "Autumn";
	rl_seasonalmonths = "SON";
    } else if(rl_month=="12") {
	rl_monthname = "December";
	rl_seasonal = "Annual";
	rl_seasonalmonths = "AnnDec";
    }

    if((rl_year * 1)>=94) {
	rl_yearfull = "19" + rl_year;
    } else {
	rl_yearfull = "20" + rl_year;
    }

    if(rl_yearfull>=2003) {
	rl_graphics = "Y";
    }


    if(rl_year!="" && rl_month!="") {
	rl_content = rl_content + "<h2>Relevant Links</h2>";
	rl_content = rl_content + "<table class=\"links\" cellspacing=\"0\" cellpadding=\"0\"><tr>";
	rl_content = rl_content + "<td valign=\"top\"><a href=\"#\" onclick=\"summaryPopup('../summaries/Summary_" + rl_yearfull + "-" + rl_month + ".html');\"><img src=\"../img/summ_thumb_" + rl_month + ".png\"/><br/>" + rl_monthname + " Climate<br/>Summary Tables</a></td>";
	if (rl_graphics=="Y") {
	    rl_content = rl_content + "<td valign=\"top\"><a href=\"#\" onclick=\"summaryPopup('http://www.hprcc.unl.edu/products/maps/acis/nrcc/" + rl_monthname.substring(0,3) + rl_year + "TDeptNRCC.png');\"><img src=\"http://www.hprcc.unl.edu/products/maps/acis/nrcc/" + rl_monthname.substring(0,3) + rl_year + "TDeptNRCC.png\"/><br/>" + rl_monthname + " Temperature<br/>Departure from Normal</a></td>";
	    rl_content = rl_content + "<td valign=\"top\"><a href=\"#\" onclick=\"summaryPopup('http://www.hprcc.unl.edu/products/maps/acis/nrcc/" + rl_monthname.substring(0,3) + rl_year + "PNormNRCC.png');\"><img src=\"http://www.hprcc.unl.edu/products/maps/acis/nrcc/" + rl_monthname.substring(0,3) + rl_year + "PNormNRCC.png\"/><br/>" + rl_monthname + " Precipitation<br/>Percent of Normal</a></td>";
	}
	if (rl_seasonal!="") {
	    if(rl_graphics=="Y") {
		rl_content = rl_content + "</tr><tr>";
	    }
	    rl_content = rl_content + "<td valign=\"top\"><a href=\"#\" onclick=\"summaryPopup('../summaries/Summary_" + rl_yearfull + "-" + rl_seasonal + ".html');\"><img src=\"../img/summ_thumb_" + (rl_seasonal.substring(0,2)).toUpperCase() + ".png\"/><br/>" + rl_seasonal + " Climate<br/>Summary Tables</a></td>";
	    if (rl_graphics=="Y") {
		rl_content = rl_content + "<td valign=\"top\"<a href=\"#\" onclick=\"summaryPopup('http://www.hprcc.unl.edu/products/maps/acis/nrcc/" + rl_seasonalmonths + rl_year + "TDeptNRCC.png');\"><img src=\"http://www.hprcc.unl.edu/products/maps/acis/nrcc/" + rl_seasonalmonths + rl_year + "TDeptNRCC.png\"/><br/>" + rl_seasonal + " Temperature<br/>Departure from Normal</a></td>";
            rl_content = rl_content + "<td valign=\"top\"<a href=\"#\" onclick=\"summaryPopup('http://www.hprcc.unl.edu/products/maps/acis/nrcc/" + rl_seasonalmonths + rl_year + "PNormNRCC.png');\"><img src=\"http://www.hprcc.unl.edu/products/maps/acis/nrcc/" + rl_seasonalmonths + rl_year + "PNormNRCC.png\"/><br/>" + rl_seasonal + " Precipitation<br/>Percent of Normal</a></td>";
	    }
	}
	rl_content = rl_content + "</tr></table>";
    }

    //    var rl_content = "<h2>Relevant Links</h2><table class=\"links\" cellspacing=\"0\" cellpadding=\"0\"><tr><td valign=\"top\"><a href=\"javascript:summaryPopup('../summaries/Summary_2009-09.html');\"><img src=\"../img/summ_thumb_09.png\"/><br/>September Climate<br/>Summary Tables</a></td><td valign=\"top\"><a href=\"javascript:summaryPopup('http://www.hprcc.unl.edu/products/maps/acis/nrcc/Sep09TDeptNRCC.png');\"><img src=\"http://www.hprcc.unl.edu/products/maps/acis/nrcc/Sep09TDeptNRCC.png\"/><br/>September Temperature<br/>Departure from Normal</a></td><td valign=\"top\"><a href=\"javascript:summaryPopup('http://www.hprcc.unl.edu/products/maps/acis/nrcc/Sep09PNormNRCC.png');\"><img src=\"http://www.hprcc.unl.edu/products/maps/acis/nrcc/Sep09PNormNRCC.png\"/><br/>September Precipitation<br/>Percent of Normal</a></td></tr></table>";

    document.getElementById('relevant_links').innerHTML = rl_content;
}



$(document).ready(function() {
	relevantLinks();
    });