if (document.images) {
	
	a_ac = new Image();			a_ac.src ="images_it/a_ac.gif"
	b_ac = new Image();			b_ac.src ="images_it/b_ac.gif"
	c_ac = new Image();			c_ac.src ="images_it/c_ac.gif"
	de_ac = new Image();			de_ac.src ="../images/de_ac.gif"
	h_ac = new Image();			h_ac.src ="../images/h_ac.gif"
	mail_ac = new Image();			mail_ac.src ="../images/mail_ac.gif"


	
	a_sp = new Image();			a_sp.src ="images_it/a_sp.gif"
	b_sp = new Image();			b_sp.src ="images_it/b_sp.gif"
	c_sp = new Image();			c_sp.src ="images_it/c_sp.gif"
	de_sp = new Image();			de_sp.src ="../images/de_sp.gif"
	h_sp = new Image();			h_sp.src ="../images/h_sp.gif"
	mail_sp = new Image();			mail_sp.src ="../images/mail_sp.gif"

				

}
function imgAc(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "_ac.src");       
        }
}
function imgSp(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "_sp.src");        
        }
}



function finestra(str) {

        searchWin = window.open(str,'finestra','scrollbars=yes,resizable=yes,width=800,height=650,status=no,location=center,top=0,left=0,toolbar=no');

//        searchWin.refer = self;

}


function makevisible(cur,which){
if (which==0)
cur.filters.alpha.opacity=100
else
cur.filters.alpha.opacity=40
}