// initialization
    var newopen=false;
    var panelCoverageValue;
    panelCoverage = new Array
        (32,36,40,44,48,52,56,60,64 );
        
    function validateTextBox(theBox,errorMsg) {
        theBoxObj = eval("document.SheetrockEstForm." + theBox);
        if (theBoxObj.value.length == 0) {
            alert(errorMsg);
            theBoxObj.focus();
            return(false);
        } else {
            return(true);
        }
    }
    
    function validateInput() {
        if (!validateTextBox("email","Please enter your email address here.")) { return(false); }
    
        atSign = document.SheetrockEstForm.email.value.indexOf("@");
        lastPeriod = document.SheetrockEstForm.email.value.lastIndexOf(".");
        if ((atSign < 1) | (lastPeriod < (atSign + 1)) | (lastPeriod >= (document.SheetrockEstForm.email.value.length - 1)) | ((lastPeriod - atSign) < 2)) {
            alert("Please enter a valid email address here.");
            document.SheetrockEstForm.email.select();
            document.SheetrockEstForm.email.focus();
            return(false);
        }
    }	
    
    function getSquareFootage(){
        // get the square foot value...
        squareFootage = parseInt(document.SheetrockEstForm.panelarea.value);
        if (isNaN(squareFootage)){
            document.SheetrockEstForm.panelarea.value = "0";
            squareFootage = 0;
            }
        // update output to lose junk values...
        document.SheetrockEstForm.panelarea.value = squareFootage;
        }	
    
    function updatePanelsOutput(){
        // get the selected panel type...
        //panelCoverageValue = panelCoverage[document.SheetrockEstForm.size.selectedIndex+1];
       	panelCoverageValue = document.SheetrockEstForm.size.value;
        getSquareFootage();
        // calculate needed panels
        numPanelsNecessary = squareFootage / panelCoverageValue;
        if (Math.floor(numPanelsNecessary) != numPanelsNecessary){
            numPanelsRoundedUp = Math.floor(numPanelsNecessary) + 1;
            }else{
            numPanelsRoundedUp = numPanelsNecessary;}
        // update output...
        document.SheetrockEstForm.totalPanels.value = numPanelsRoundedUp;
        document.getElementById('totalPanels').innerHTML = numPanelsRoundedUp;
        }
        
    function getSquareFootage(){
        // get the square foot value...
        squareFootage = parseInt(document.SheetrockEstForm.panelarea.value);
        if (isNaN(squareFootage)){
            document.SheetrockEstForm.panelarea.value = "0";
            squareFootage = 0;}
        // update output to lose junk values...
        document.SheetrockEstForm.panelarea.value = squareFootage;
        }	
        
    function updateJointTapeOutput() {
        // get the selected treatment type...
        treatmentMultiplierValue = 0.37;
        treatmentSuffixValue = " ft.";
        // get the square foot value...
        getSquareFootage();
        // calculate needed treatment
        amtTreatment = squareFootage * treatmentMultiplierValue;		
        if (Math.floor(amtTreatment) != amtTreatment) {
            amtTreatment = Math.floor(amtTreatment) + 1;}	
        // update output...
//        document.SheetrockEstForm.jointtape.value = String(amtTreatment);
  			document.getElementById('jointtape').innerHTML = String(amtTreatment) + treatmentSuffixValue;
        document.SheetrockEstForm.hid_jointtape.value = String(amtTreatment) + treatmentSuffixValue;
        }
        
    //function updateJointCompoundsOutput() {
    //	treatmentMultiplierValue = 0.085;
    //	treatmentSuffixValue = " lb.";
    //	getSquareFootage();
    //	amtTreatment = squareFootage * treatmentMultiplierValue;		
    //	if (Math.floor(amtTreatment) != amtTreatment) {
    //		amtTreatment = Math.floor(amtTreatment) + 1;}	
    //	document.SheetrockEstForm.jointcompounds.value = String(amtTreatment);
    //	document.SheetrockEstForm.hid_jointcompounds.value = String(amtTreatment) + treatmentSuffixValue;
    //	}
    
    function updateDurabondOutput()	{
        treatmentMultiplierValue = 0.0725;
        treatmentSuffixValue = " lbs.";
        getSquareFootage();
        amtTreatment = squareFootage * treatmentMultiplierValue;		
        if (Math.floor(amtTreatment) != amtTreatment) {
            amtTreatment = Math.floor(amtTreatment) + 1;}	
 //       document.SheetrockEstForm.durabond.value = String(amtTreatment);
   			document.getElementById('durabond').innerHTML = String(amtTreatment) + treatmentSuffixValue;
       document.SheetrockEstForm.hid_durabond.value = String(amtTreatment) + treatmentSuffixValue;
        }	
        
    function updateEasySandOutput() {
        treatmentMultiplierValue = 0.0525;
        treatmentSuffixValue = " lbs.";
        getSquareFootage();
        amtTreatment = squareFootage * treatmentMultiplierValue;		
        if (Math.floor(amtTreatment) != amtTreatment) {
            amtTreatment = Math.floor(amtTreatment) + 1;}	
//        document.SheetrockEstForm.easysand.value = String(amtTreatment);
  			document.getElementById('easysand').innerHTML = String(amtTreatment) + treatmentSuffixValue;
        document.SheetrockEstForm.hid_easysand.value = String(amtTreatment) + treatmentSuffixValue;
        }

function updateReadyMixedOutput() {
	treatmentMultiplierValue = 0.14;
	treatmentSuffixValue = " lbs.";
	getSquareFootage();
	amtTreatment = squareFootage * treatmentMultiplierValue;
	if (Math.floor(amtTreatment) != amtTreatment) {
		amtTreatment = Math.floor(amtTreatment) + 1;
	}
	document.getElementById('readymixed').innerHTML = String(amtTreatment) + treatmentSuffixValue;
	document.SheetrockEstForm.hid_readymixed.value = String(amtTreatment) + treatmentSuffixValue;
}

function updatePlus3Output() {
	treatmentMultiplierValue = 0.0095;
	treatmentSuffixValue = " gal.";
	getSquareFootage();
	amtTreatment = squareFootage * treatmentMultiplierValue;
	if (Math.floor(amtTreatment) != amtTreatment) {
		amtTreatment = Math.floor(amtTreatment) + 1;}
		document.getElementById('plus3').innerHTML = String(amtTreatment) + treatmentSuffixValue;
		document.SheetrockEstForm.hid_plus3.value = String(amtTreatment) + treatmentSuffixValue;
}

function updatePaintOutput() {
	treatmentMultiplierValue = 0.003;
	treatmentSuffixValue = " gal.";
	getSquareFootage();
	amtTreatment = squareFootage * treatmentMultiplierValue;
	if (Math.floor(amtTreatment) != amtTreatment){
		amtTreatment = Math.floor(amtTreatment) + 1;
	}
	document.getElementById('paint').innerHTML = String(amtTreatment) + treatmentSuffixValue;
	document.SheetrockEstForm.hid_paint.value = String(amtTreatment) + treatmentSuffixValue;
}

function updateNailsOutput() {
	treatmentMultiplierValue = 2.00;
	treatmentSuffixValue = " nails.";
	getSquareFootage();
	amtTreatment = squareFootage * treatmentMultiplierValue;
	if (Math.floor(amtTreatment) != amtTreatment) {
		amtTreatment = Math.floor(amtTreatment) + 1;
	}
	document.getElementById('nails').innerHTML = String(amtTreatment);
	document.SheetrockEstForm.hid_nails.value = String(amtTreatment) + treatmentSuffixValue;
}	

function updateScrewsOutput() {
	treatmentMultiplierValue = 1.25;
	treatmentSuffixValue = " screws.";
	getSquareFootage();
	amtTreatment = squareFootage * treatmentMultiplierValue;
	if (Math.floor(amtTreatment) != amtTreatment) {
		amtTreatment = Math.floor(amtTreatment) + 1;
	}
	document.getElementById('screws').innerHTML = String(amtTreatment);
	document.SheetrockEstForm.hid_screws.value = String(amtTreatment) + treatmentSuffixValue;
}	

function updateAdhesiveOutput() {
	treatmentMultiplierValue = 0.0302;
	treatmentSuffixValue = " (29 oz.) tubes";
	getSquareFootage();
	amtTreatment = squareFootage * treatmentMultiplierValue;		
	if (Math.floor(amtTreatment) != amtTreatment) {
		amtTreatment = Math.floor(amtTreatment) + 1;
	}
	document.getElementById('adhesive').innerHTML = String(amtTreatment) + treatmentSuffixValue;
	document.SheetrockEstForm.hid_adhesive.value = String(amtTreatment) + treatmentSuffixValue;
}	

function updateOutput() {
	updatePanelsOutput();
	updateJointTapeOutput();
	//	updateJointCompoundsOutput();
	updateDurabondOutput();
	updateEasySandOutput();
	updateReadyMixedOutput();
	updatePlus3Output();
	updatePaintOutput();
	updateNailsOutput();
	updateScrewsOutput();
	updateAdhesiveOutput();
	//MM_showHideLayers('results','','show');
	MM_displayLayers('results','','block');
	MM_displayLayers('printLink','','block');        
}
        
function checkForm() {
if (!(validateEmail(document.SheetrockEstForm.email.value))) {
		alert("Please enter a valid email address.");
		document.SheetrockEstForm.email.focus();
		return false;
	}        
	return true;
}

function validateEmail(str) {
	var re = new RegExp
	re = /\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/
	return re.test(str)
}

function resetForm() {
	document.SheetrockEstForm.panelarea.value = "";
	document.SheetrockEstForm.size.selectedIndex = 0;
}

function doScript(theFormBean) {
	alert("the form bean: ");		
}       

function openPrintWindow() {
	var strURL = "/resources/onlinetools/sheetrockEst_print.jsp";

	if(navigator.userAgent.indexOf("MSIE") == -1) {
		newwindow = window.open(strURL, '', 'toolbar=0,scrollbars=1,status=0,resizable=1,menubar=1,width=700,height=450'); 
		newwindow.focus();
	} else {
		window.open(strURL, '', 'toolbar=0,scrollbars=1,status=0,resizable=1,menubar=1,width=700,height=450'); 
	}
}