if (navigator.appVersion.substring(0,1) >= 3) version= "3";
else version = "2"

if (version=="3") {	
		img1_pover = new Image();
		img1_pover.src = "images/_practice_support_on.gif";
		img1_poff = new Image();
		img1_poff.src = "images/_practice_support_off.gif";
		
		img2_pover = new Image();
		img2_pover.src = "images/_practice_growth_on.gif";
		img2_poff = new Image();
		img2_poff.src = "images/_practice_growth_off.gif";
		
		img3_pover = new Image();
		img3_pover.src = "images/_practice_compensation_on.gif";
		img3_poff = new Image();
		img3_poff.src = "images/_practice_compensation_off.gif";
						
		img4_pover = new Image();
		img4_pover.src = "images/_practice_development_on.gif";
		img4_poff = new Image();
		img4_poff.src = "images/_practice_development_off.gif";
		
		img5_pover = new Image();
		img5_pover.src = "images/_practice_hr_on.gif";
		img5_poff = new Image();
		img5_poff.src = "images/_practice_hr_off.gif";
		
		img6_pover = new Image();
		img6_pover.src = "images/_practice_legal_on.gif";
		img6_poff = new Image();
		img6_poff.src = "images/_practice_legal_off.gif";
		
	}

	function imgOver(imgName) {
			if (version=="3") {
				document[imgName].src = eval(imgName + "over.src");	   
			}
	}

	function imgOff(imgName) {
			if (version=="3") {
				document[imgName].src = eval(imgName + "off.src");		
			}
	}