var swidth = (screen.width);
var sheight = (screen.height);

function feedbackpop(cur_url) {
	var str = navigator.userAgent;
	var plat = navigator.platform;
	if(b=str.indexOf("Safari") != -1){
		browser_name = "Safari";
		swidth = 620;
		sheight = 510;
	}else if(b=str.indexOf("Firefox") != -1 && plat == "Win32"){
		browser_name = "Firefox";
		swidth = 535;
		sheight = 488;
	}else if(b=str.indexOf("Firefox") != -1 && plat != "Win32"){
		browser_name = "Firefox";
		swidth = 620;
		sheight = 510;
	}else if(b=str.indexOf("MSIE") != -1){
		browser_name = "MSIE";
		swidth = 535;
		sheight = 488;
	}else{
		browser_name = "unknown";
		swidth = 535;
		sheight = 488;
	}
	//alert(browser_name);
	var feedback_url = 'http://www.discountexhaustsystems.com/feedback/index.php';
	//535,488
	window.open(feedback_url+'?w='+swidth+'&h='+sheight+'&u='+cur_url, 'feedbk', 'width='+swidth+', height='+sheight+', screenX='+((swidth-'+swidth+')/2)+',screenY='+((sheight-'+sheight+')/2)+',top='+((sheight-'+sheight+')/2)+',left='+((swidth-'+swidth+')/2)+',resizable=yes,copyhistory=yes,scrollbars=no');
}

function fcheck_required_overall() {
	var OverallValue = "";

	if(typeof document.feedback.overall!='undefined') {
		if(typeof document.feedback.overall.value!='undefined'){
			OverallValue = document.feedback.overall.value;
		} else {
			for (i=0; i<5; i++) {
			  if(typeof document.feedback.overall[i]!='undefined'){
				  if(document.feedback.overall[i].checked=="1"){
					OverallValue=document.feedback.overall[i].value;
				  }
			  }else{OverallValue="0"}
			}
		}

	} else { OverallValue="0" }

	if (OverallValue == "" ) {
		alert("Please choose an overall rating before submitting.");
		return false;
	}

}


function fcheck_required_comments() {
	var CommentsValue = "";

	if(typeof document.feedback.comments!='undefined') {
		if(typeof document.feedback.comments.value!='undefined'){
			if (document.feedback.comments.value != 'Please enter your comments about this webpage here.') {
				CommentsValue = document.feedback.comments.value;
			}
		}
	} else { CommentsValue="0" }

	if (CommentsValue == "" ) {
		alert("Please enter your comments before submitting.");
		return false;
	}

}


function fcheck_required() {
	var CommentsValue = "";
	var EmailValue = document.feedback.answer_6.value;

	if(typeof document.feedback.comments!='undefined') {
                if(typeof document.feedback.comments.value!='undefined'){
                        if (document.feedback.comments.value != 'Please enter your comments about this webpage here.') {
                                CommentsValue = document.feedback.comments.value;
                        }
                }
        } else { CommentsValue="0" }

	if (CommentsValue == "" ) {
                alert("Please enter your comments before submitting.");
                return false;
        } else if (EmailValue == "") {
		alert("Please enter your email address.");
		return false;
	}
}


function textCounter(field,cntfield,maxlimit) {
	if (field.value.length > maxlimit) // if too long...trim it!
		field.value = field.value.substring(0, maxlimit);
	// otherwise, update 'characters left' counter
	else
		cntfield.value = maxlimit - field.value.length;
}

function clearTextArea() {
        if (document.feedback.cleared.value == '') {
                document.feedback.cleared.value = 1;
                document.feedback.comments.value = '';
        }
}