Cosalt leads the general industrials sector higher after the struggling provider of safety equipment to the oil industry confirmed this morning it has received an approach for its marine business.Elsewhere in the sector, Smiths Group is going well on hopes the latest Al Qaeda bomb threat will increase demand for its cargo-scanning equipment.ASOS is helping to keep retail in the red today. Despite current trading levels remaining positive at the online fashion group and potential for strong growth, KBC Peel Hunt is downgrading it to a sell as it believes the current shares to be overvalued. Not all stocks in the sector are suffering. Shares in aim listed caravan and motor home retailer Discover Leisure vaulted 14% after it narrowed annual pre-tax losses and said the outlook for industry is improving.Top performing sectors so far todayGeneral Industrials 2,849.52 +2.00%Alternative Energy 3,021.86 +1.57%Industrial Metals & Mining 7,507.92 +1.30%Aerospace and Defence 3,454.40 +1.16%Fixed Line Telecommunications 2,075.60 +0.96%Bottom performing sectors so far todayConstruction & Materials 3,637.77 -1.05%General Retailers 1,756.44 -0.94%Industrial Engineering 6,002.66 -0.53%Gas, Water & Multiutilities 4,608.50 -0.52%Real Estate Investment Trusts 1,974.50 -0.20%