$(document).ready(function(){
	$("#vtrim_bmi").hide();
	$("#calculate_bmi").click(function(){
		var weight = $("#vtrim_weight").val();
		var inches = $("#vtrim_heightinches").val();
		var feet = $("#vtrim_heightfeet").val();
		if (!feet.match(/^\d+$/)){
			$("#vtrim_bmi").hide();
			$("#vtrim_bmi").html('<span class="vtrim_healthtools_output">Please enter a valid number for feet.  Only whole numbers are allowed.  No decimals please.</span>');
			$("#vtrim_bmi").fadeIn(800);
		}else if (inches.match(/^\.+$/)){
			$("#vtrim_bmi").hide();
			$("#vtrim_bmi").html('<span class="vtrim_healthtools_output">Please enter a valid number for inches.  You only entered a decimal point.</span>');
			$("#vtrim_bmi").fadeIn(800);
		}else if (!inches.match(/^\d*\.?\d*$/)){
			$("#vtrim_bmi").hide();
			$("#vtrim_bmi").html('<span class="vtrim_healthtools_output">Please enter a valid number for inches.</span>');
			$("#vtrim_bmi").fadeIn(800);
		}else if (weight.match(/^\.+$/)){
			$("#vtrim_bmi").hide();
			$("#vtrim_bmi").html('<span class="vtrim_healthtools_output">Please enter a valid weight.  You only entered a decimal point.</span>');
			$("#vtrim_bmi").fadeIn(800);
		}else if (!weight.match(/^\d*\.?\d*$/)){
			$("#vtrim_bmi").hide();
			$("#vtrim_bmi").html('<span class="vtrim_healthtools_output">Please enter a valid weight.</span>');
			$("#vtrim_bmi").fadeIn(800); 
		}else{  
			var height = 0;
			height = (12 * Math.abs(feet))+ Math.abs(inches) ;
			var bmi = ( weight / (height * height) ) * 703;
			bmi = bmi.toFixed(2);
			$("#vtrim_bmi").hide();
			$("#vtrim_bmi").html('<span class="vtrim_healthtools_output">Your BMI is '+bmi+'</span>');
			$("#vtrim_bmi").fadeIn(800);
		}
	});
});