function updateView(id){
    if(document.curID != undefined){
        document.getElementById(document.curID).style.display = "none";
    }
    if(id == "overview"){
    	document.getElementById("overviewBtn").style.display = "none";
       	document.getElementById("legend").style.display = "block";
    }else{
    	document.getElementById("overviewBtn").style.display = "block";
        document.getElementById("legend").style.display = "none";
    }
    document.pdfHTML = document.getElementById(id).innerHTML;
    document.getElementById(id).style.display = "block";
    document.curID = id;
    document.pdfForm.URL.value = document.siteRoot+id+document.pdfURLStr;
    console.log(document.pdfForm.URL.value);
}