function launch(myUrl, width, height, left, top, scroll)
		{
			if (width>0) {
				w = width;
			} else {
				w = 50;
			}

			if (height>0) {
				h = height;
			} else {
				h = 50;
			}

			if (left>0) {
				l = left;
			} else {
				l = 50;
			}

			if (top>0) {
				t = top;
			} else {
				t = 50;
			}

			if (scroll!="") {
				scrolling = scroll;
			} else {
				scrolling = "no"
			}
			var ouvre = 1;
			var szParams = "toolbar=no,scrollbars= "+scrolling+",width=" + w + ",height=" + h + ",resizable=no,top="+t+",left="+l+""
			mafenetre = window.open(myUrl,"window", szParams);
		}