var feat="width=700,height=450,resizable=yes,left=100,top=100,screenX=0,screenY=0";

function ow(num) {
	var w=null;
	switch(num) {
	
		case 1:
		w=window.open("http://www.chaine-espoir.asso.fr","chaine",feat);
		break;
		
		case 2:
		w=window.open("http://www.tf1.fr","tf1",feat);
		break;
		
		case 3:
		w=window.open("#","def",feat);
		break;
		}
	}