function pagetop() {
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	window.scrollBy( 0, -130 );
	}

function laserprinter() {
	location.href = "#laserprinter";
	window.scrollBy( 0, -130 );
	}

function cutting() {
	location.href = "#cutting";
	window.scrollBy( 0, -130 );
	}

function ribbonprinter() {
	location.href = "#ribbonprinter";
	window.scrollBy( 0, -130 );
	}

function software() {
	location.href = "#software";
	window.scrollBy( 0, -130 );
	}

function others() {
	location.href = "#others";
	window.scrollBy( 0, -130 );
	}

function supply() {
	location.href = "#supply";
	window.scrollBy( 0, -130 );
	}

function topics() {
	location.href = "#topics";
	window.scrollBy( 0, -130 );
	}

function adv() {
	location.href = "#adv";
	window.scrollBy( 0, -130 );
}