// author Fred Leclerc

// fait le swap entre l'image de base et le l'image de rollover\
/*
	recoit 
	
	retourne la nouvelle source
*/
function setImageSource(src, suffixOver, suffixStateless, format){
    newSrc = src.substring(0, (src.length - format.length));
    suffix = newSrc.substring((newSrc.length - suffixOver.length), newSrc.length);
    if(suffix == suffixOver){
        simpleSource = newSrc.substring(0,(newSrc.length - suffix.length));
		return simpleSource+suffixStateless+format;
    }else if(suffix == suffixStateless){
        simpleSource = newSrc.substring(0,(newSrc.length - suffix.length));
		return simpleSource+suffixOver+format;
    }			
}



function swapTab(img, state){        
	if(!state){
		newSrc = setImageSource(img.src, "_over", "_gray", ".jpg");	
    	img.src = newSrc;
    }
}