function commercialbuilding()
{
//1
var ranNum= Math.round(Math.random() * 1);
if (ranNum == 0){document.write('<img src="CommercialGraphics/BuildingBrick.jpg" width="293" height="161">'); } // BuildingBrick
if (ranNum == 1){document.write('<img src="CommercialGraphics/BuildingGlass.jpg">'); } // BuildingGlass
}