function imgview(imagename) {
	var canvas=document.getElementById('imgcanvas');
	var bg=document.getElementById('imgbackground');
	bg.style.visibility="visible";
	canvas.src='http://media.evo/main/logo.png';
	canvas.style.width='640px';
	canvas.style.height='480px';
	canvas.src=imagename;
}

function zoomin(){
	canvas.style.width=canvas.style.width + 40 + 'px';
	canvas.style.height=canvas.style.width + 30 + 'px';
}