function FindArea(form) {
	var item, lengthunitsValue, widthunitsValue, depthunitsValue;
        	
        item = form.lengthunits.selectedIndex;
        L = form.length.value;
        lengthunitsValue = eval(form.lengthunits.options[item].value)

        if (isNaN(L) || L == 0) {
        	document.getElementById("area").innerHTML = "<div id='error'>Please enter the<br>length of area required!</div>";
        	return;
	}
        
	if (lengthunitsValue == 1) {
		metriclength = L;
	} else if (lengthunitsValue == 2) {
		metriclength = (L*0.9144); 
	} else if (lengthunitsValue == 3) {
		metriclength = (L*0.3048);
	} else if (lengthunitsValue == 4) {
		metriclength = (L*0.0254);
	}
										
        item = form.widthunits.selectedIndex;
        W = form.width.value;
        widthunitsValue = eval(form.widthunits.options[item].value)

        if (isNaN(W) || W == 0) {
	        document.getElementById("area").innerHTML = "<div id='error'>Please enter the <br>width of area required!</div>";
	        return;
	}

	if (widthunitsValue == 5) {
	        metricwidth = W;
	} else if (widthunitsValue == 6) {
         	metricwidth = W*0.9144;
	} else if (widthunitsValue == 7) {
		metricwidth = W*0.3048;
	} else if (widthunitsValue == 8 ) {
		metricwidth = W*0.0254;
	}

        item = form.depthunits.selectedIndex;
        D = form.depth.value;
        depthunitsValue = eval(form.depthunits.options[item].value)

        if (isNaN(D) || D == 0) {
	        document.getElementById("area").innerHTML = "<div id='error'>Please enter the <br>depth of area required!</div>";
        	return;
	}

	if (depthunitsValue == 9) {
		metricdepth = D;
	} else if (depthunitsValue == 10) {
		metricdepth = D*0.9144;
	} else if (depthunitsValue == 11) {
		metricdepth = D*0.3048;
	} else if (depthunitsValue == 12) {
		metricdepth = D*0.0254;
	} else if (depthunitsValue == 13) {
		metricdepth = D*0.01;
	} else if (depthunitsValue == 14) {
		metricdepth = D*0.001;
	}
	         			         		         		
	result = Math.round((metriclength*metricwidth*metricdepth)*100)/100;
	resulttext = result+'';  		
	fontsize = resulttext.length * 4;
	fontsize = 48 - (fontsize/3);
		
	if (fontsize < 10) { fontsize = 10; }
	fonttext = "style='font-size: " + fontsize + "px;'";

	document.getElementById("area").innerHTML = "<div id='actual' " + fonttext + ">" + result +" m<small><sup>3</sup></small></div>";
}