function pageTopScroll() {
var scrj = 1;
var scdist = document.body.parentNode.scrollTop;
if(scrj<50 && scdist) {
scdist = (scdist>2) ? Math.ceil(scdist*.2) : 1;
scrj++;
scrollBy(0,-scdist);
setTimeout("pageTopScroll()",20);
} else {
scrollTo(0,0);
scrj = 1;
}
}



function ch_pic(pic_file) {
	document.chPho.src = pic_file;
}

function ch_pic1(pic1_file){
	document.chPho1.src = pic1_file;
}

function ch_pic2(pic2_file) {
	document.chPho2.src = pic2_file;
}

function ch_pic3(pic3_file) {
	document.chPho3.src = pic3_file;
}

function ch_pic4(pic4_file) {
	document.chPho4.src = pic4_file;
}

function ch_pic5(pic5_file) {
	document.chPho5.src = pic5_file;
}

function ch_pic6(pic6_file) {
	document.chPho6.src = pic6_file;
}

function ch_pic7(pic7_file) {
	document.chPho7.src = pic7_file;
}

function ch_pic8(pic8_file) {
	document.chPho8.src = pic8_file;
}

function ch_pic9(pic9_file) {
	document.chPho9.src = pic9_file;
}

function ch_pic10(pic10_file) {
	document.chPho10.src = pic10_file;
}

function ch_pic11(pic11_file){
	document.chPho11.src = pic11_file;
}

function ch_pic12(pic12_file) {
	document.chPho12.src = pic12_file;
}

function ch_pic13(pic13_file) {
	document.chPho13.src = pic13_file;
}

function ch_pic14(pic14_file) {
	document.chPho14.src = pic14_file;
}

function ch_pic15(pic15_file) {
	document.chPho15.src = pic15_file;
}

function ch_pic16(pic16_file) {
	document.chPho16.src = pic16_file;
}

function ch_pic17(pic17_file) {
	document.chPho17.src = pic17_file;
}

function ch_pic18(pic18_file) {
	document.chPho18.src = pic18_file;
}

function ch_pic19(pic19_file) {
	document.chPho19.src = pic19_file;
}

function ch_pic20(pic20_file) {
	document.chPho20.src = pic20_file;
}