function changeIt(objName)
{
	var obj = document.getElementById(objName);
	var objId = new Array();
		objId[0] = "image1";
		objId[1] = "image2";
		objId[2] = "image3";
		objId[3] = "image4";
        objId[4] = "image5";
        objId[5] = "image6";
        objId[6] = "image7";
        objId[7] = "image8";
        objId[8] = "image9";
        objId[9] = "image10";
		objId[10] = "image11";
		objId[11] = "image12";
		objId[12] = "image13";
		objId[13] = "image14";
        objId[14] = "image15";
        objId[15] = "image16";
        objId[16] = "image17";
        objId[17] = "image18";
        objId[18] = "image19";
        objId[19] = "image20";
		objId[20] = "image21";
		objId[21] = "image22";
		objId[22] = "image23";
		objId[23] = "image24";
        objId[24] = "image25";
        objId[25] = "image26";
        objId[26] = "image27";
        objId[27] = "image28";
        objId[28] = "image29";
        objId[29] = "image30";

	var i;
	var tempObj;
	for(i=0;i<objId.length;i++)
	{
		if(objName == objId[i])
		{
			obj.style.display = "block";
		}
		else
		{
			tempObj = document.getElementById(objId[i]);
			tempObj.style.display = "none";	
		}
	}
	return;	
}