var Nav_Ok = false;

if( (navigator.appName.indexOf("Netscape") >= 0 || navigator.appName.indexOf("Explorer") >= 0)
  && (navigator.userAgent.indexOf("Mozilla/3.0") >= 0 || navigator.userAgent.indexOf("Mozilla/4") >= 0) )

  Nav_Ok = true;  // le navigateur peut gerer les boutons réactifs

if (Nav_Ok)
{
        clksom1=0;
        clksom2=0;
        clksom3=0;
        clksom1=0;
        clksom2=0;
        clksom3=0;
        clksom4=0;
        clksom5=0;
        clksom6=0;      
        clksom7=0;

         
		
        imgsom1_clic = new Image();
        imgsom2_clic = new Image();
        imgsom3_clic = new Image();
        imgsom4_clic = new Image();
        imgsom5_clic = new Image();
        imgsom6_clic = new Image();
        imgsom7_clic = new Image();
        
        imgsom1_off = new Image();
        imgsom2_off = new Image();
        imgsom3_off = new Image();
        imgsom4_off = new Image();
        imgsom5_off = new Image();
        imgsom6_off = new Image();
        imgsom7_off = new Image();
        imgsom8_off = new Image();
        imgsom1_txt = new Image();
        imgsom2_txt = new Image();
        imgsom3_txt = new Image();
        imgsom4_txt = new Image();
        imgsom5_txt = new Image();
        imgsom6_txt = new Image();
        imgsom7_txt = new Image();
        imgsom0_txt = new Image();

        
        imgsom1_on = new Image();
        imgsom2_on = new Image();
        imgsom3_on = new Image();
        imgsom4_on = new Image();
        imgsom5_on = new Image();
        imgsom6_on = new Image();
        imgsom7_on = new Image();

        imgsom1_clic.src = "images/photo1on_frame_haute.gif";
        imgsom2_clic.src = "images/photo2on_frame_haute.gif";
        imgsom3_clic.src = "images/photo3on_frame_haute.gif";
        imgsom4_clic.src = "images/photo4on_frame_haute.gif";
        imgsom5_clic.src = "images/photo5on_frame_haute.gif";
        imgsom6_clic.src = "images/photo6on_frame_haute.gif";
        imgsom7_clic.src = "images/photo7on_frame_haute.gif";
        
        imgsom1_off.src = "images/photo1off_frame_haute.gif";
        imgsom2_off.src = "images/photo2off_frame_haute.gif";;
        imgsom3_off.src = "images/photo3off_frame_haute.gif";
        imgsom4_off.src = "images/photo4off_frame_haute.gif";
        imgsom5_off.src = "images/photo5off_frame_haute.gif";
        imgsom6_off.src = "images/photo6off_frame_haute.gif";
        imgsom7_off.src = "images/photo7off_frame_haute.gif";
        
        imgsom1_on.src = "images/photo1on_frame_haute.gif";
        imgsom2_on.src = "images/photo2on_frame_haute.gif";
        imgsom3_on.src = "images/photo3on_frame_haute.gif";
        imgsom4_on.src = "images/photo4on_frame_haute.gif";
        imgsom5_on.src = "images/photo5on_frame_haute.gif";
        imgsom6_on.src = "images/photo6on_frame_haute.gif";
        imgsom7_on.src = "images/photo7on_frame_haute.gif";
        
        
        imgsom1_txt.src = "images/txt_photo1.gif";
        imgsom2_txt.src = "images/txt_photo2.gif";
        imgsom3_txt.src = "images/txt_photo3.gif";
        imgsom4_txt.src = "images/txt_photo4.gif";
        imgsom5_txt.src = "images/txt_photo5.gif";
        imgsom6_txt.src = "images/txt_photo6.gif";
        imgsom7_txt.src = "images/txt_photo7.gif";

        imgsom0_txt.src = "images/txt_photo1.gif";
       
}

function ClickSom () {
        if (Nav_Ok)
        {
                clksom1 = 0;
                clksom2 = 0;
                clksom3 = 0;
                clksom4 = 0;
                clksom5 = 0;
                clksom6 = 0;
                clksom7 = 0;
                
                
                document.imgsom1.src="images/photo1off_frame_haute.gif";
                document.imgsom2.src="images/photo2off_frame_haute.gif";
                document.imgsom3.src="images/photo3off_frame_haute.gif";
                document.imgsom4.src="images/photo4off_frame_haute.gif";
                document.imgsom5.src="images/photo5off_frame_haute.gif";
                document.imgsom6.src="images/photo6off_frame_haute.gif";
                document.imgsom7.src="images/photo7off_frame_haute.gif";
                
        }
}