if (document.images) 


classicOff = new Image
classicOff.src = "images/curtain1_1.gif"

classicOn = new Image
classicOn.src = "images/curtain1_2.gif"


modernOff = new Image
modernOff.src = "images/curtain2_1.gif"

modernOn = new Image
modernOn.src = "images/curtain2_2.gif"


eleganceOff = new Image
eleganceOff.src = "images/curtain3_1.gif"

eleganceOn = new Image
eleganceOn.src = "images/curtain3_2.gif"


casualOff = new Image
casualOff.src = "images/curtain4_1.gif"

casualOn = new Image
casualOn.src = "images/curtain4_2.gif"

naturalOff = new Image
naturalOff.src = "images/curtain5_1.gif"

naturalOn = new Image
naturalOn.src = "images/curtain5_2.gif"

shadingOff = new Image
shadingOff.src = "images/curtain6_1.gif"

shadingOn = new Image
shadingOn.src = "images/curtain6_2.gif"


brandOff = new Image
brandOff.src = "images/curtain7_1.gif"

brandOn = new Image
brandOn.src = "images/curtain7_2.gif"


laceOff = new Image
laceOff.src = "images/curtain8_1.gif"

laceOn = new Image
laceOn.src = "images/curtain8_2.gif"


shadeOff = new Image
shadeOff.src = "images/shade1_1.gif"

shadeOn = new Image
shadeOn.src = "images/shade1_2.gif"


sharpOff = new Image
sharpOff.src = "images/shade2_1.gif"

sharpOn = new Image
sharpOn.src = "images/shade2_2.gif"


rollOff = new Image
rollOff.src = "images/shade3_1.gif"

rollOn = new Image
rollOn.src = "images/shade3_2.gif"


japaOff = new Image
japaOff.src = "images/shade4_1.gif"

japaOn = new Image
japaOn.src = "images/shade4_2.gif"


function chgImg(imgField,newImg) {
         if (document.images) {
                document[imgField].src= eval(newImg + ".src")
                }
         }