var cached=0;

if (document.images){

the_1_on = new Image()
the_1_on.src = "images/about/1_big.jpg"
the_2_on = new Image()
the_2_on.src = "images/about/2_big.jpg"
the_3_on = new Image()
the_3_on.src = "images/about/3_big.jpg"
the_4_on = new Image()
the_4_on.src = "images/about/4_big.jpg"
the_5_on = new Image()
the_5_on.src = "images/about/5_big.jpg"
the_6_on = new Image()
the_6_on.src = "images/about/6_big.jpg"
the_7_on = new Image()
the_7_on.src = "images/about/7_big.jpg"
the_8_on = new Image()
the_8_on.src = "images/about/8_big.jpg"

the_1_small =  new Image()
the_1_small.src = "images/about/1_on.jpg"
the_2_small =  new Image()
the_2_small.src = "images/about/2_on.jpg"
the_3_small =  new Image()
the_3_small.src = "images/about/3_on.jpg"
the_4_small =  new Image()
the_4_small.src = "images/about/4_on.jpg"
the_5_small =  new Image()
the_5_small.src = "images/about/5_on.jpg"
the_6_small =  new Image()
the_6_small.src = "images/about/6_on.jpg"
the_7_small =  new Image()
the_7_small.src = "images/about/7_on.jpg"
the_8_small =  new Image()
the_8_small.src = "images/about/8_on.jpg"

cached=1;
}

function bigImageOn(imgName) {
	if (cached==1) {
	lineOn = eval("the_" + imgName + "_on.src");
	document ['bigImage'].src= lineOn;

	document.getElementById("small_" + imgName).src = eval("the_" + imgName + "_small.src");

	}
}

function bigImageOff(imgName) {
	if (cached==1) {
		document.getElementById("small_" + imgName).src = "images/about/" + imgName + ".jpg"
	}
}