function getRollWeight(diameter,core,width,factor){
	
	var weight = (((diameter*diameter) - (core*core))*(width*factor))
	return weight;

}


function getLinearFeet(rollweight,scalefactor,rollwidth,basisweight){
	var linearfeet = (rollweight*scalefactor*500)/(rollwidth*basisweight*12);
	return linearfeet;
}


function getPercentage(diameter,slab){

	var percentage = (400*((diameter*slab)-(slab*slab)))/(diameter*diameter);
	return percentage;
}


function swapTimeline(img){
	$("#timelinegraphic").attr("src","images/timeline_"+img+".png");
}


function showHoverTimeline(img){
	$("#"+img).css("display","block");
}

function restoreTimeline(img){
	$(".nodehover").hide();
	$("#timelinegraphic").attr("src","images/timeline_blank.gif");
}

 $(document).ready(function() {
	 //$(".nodehover").hide();
	  $(".nodehover").fadeOut();
//$("map *").tooltip({ positionLeft: true });

//png fix
       $(document).pngFix();  	

function mainmenu(){
$("#navigation ul").css({display: "none"}); // Opera Fix
/*
$(" #navigation li").hover(function(){
		$(this).find('ul:first').css({visibility: "visible",display: "none"}).show(400);
		},function(){
		$(this).find('ul:first').css({visibility: "hidden"});
		});
}
*/
$("#navigation li").hover(function(){
		$(this).find('ul:first').show();
		},function(){
		$(this).find('ul:first').hide();
		});
}


//calculate sizing and weight per grade
$("#Size").change(function(){
if($(this).val()){
var datastream = "size="+$(this).val();
 $("#myoutput").html("Loading Data...");
 $.ajax({
   type: "POST",
   url: "/build/ajax_weight.php",
   data: datastream,
   success: function(msg){
	 $("#myoutput").html(msg);

	}
 });


return false;
}
});


//caliper to ppi calculation
$("#Caliper").change(function(){
if($(this).val()){
var datastream = "caliper="+$(this).val();
 $("#myppi").html("Loading Data...");
 $.ajax({
   type: "POST",
   url: "/build/ajax_ppi.php",
   data: datastream,
   success: function(msg){
	 $("#myppi").show();	    
	 $("#myppi").html(msg); 
	}
 });


}
return false;

});


//estimated roll weight
$("#estimatedrollweight").submit(function(){
var d = $("#Diameter").val();
var c = $("#Core").val();
var w = $("#RollWidth").val();
var f = $("#Grade").val();
var weight = getRollWeight(d,c,w,f);
/* alert(weight); */
$("#myrollweight").show();
$("#myrollweight").html(weight+" lb");

return false;
});


//linear feet from roll weight
$("#linearfeet").submit(function(){
var rollweight = $("#rollweight").val();
var scalefactor = $("#scalefactor").val();
var rollwidth = $("#rollwidth2").val();
var basisweight = $("#basisweight").val();
var linearfeet = getLinearFeet(rollweight,scalefactor,rollwidth,basisweight);
$("#mylinearfeet").show();
$("#mylinearfeet").html(linearfeet+" ft");

return false;
});

//percentage 
$("#percentageweightloss").submit(function(){
var d = $("#originaldiameter").val();
var s = $("#depthslab").val();
var percentage = getPercentage(d,s);
$("#mypercentage").show();
$("#mypercentage").html(percentage+"%");

return false;
});
//set menu
mainmenu();

});

function closethis(id){
	$("#"+id).html('');
}

//hide