//     scherm startposities instellen nav beeldschermgrootte.

        if ((screen.width>=1280) && (screen.height>=1024))
            {
            document.getElementById("beitharmenu").style.top                    ="  0px";
            document.getElementById("beitharmenu").style.height                 ="850px";
            document.getElementById("beitharmenu").style.width                  ="1060px";
            document.getElementById("beitharmenu").style.left                   ="50%";
            document.getElementById("beitharmenu").style.marginLeft             ="-530px";

            document.getElementById("contentoverlaytop").style.top              ="50px";
            document.getElementById("contentoverlaytop").style.height           ="175px";
            document.getElementById("contentoverlaytop").style.width            ="675px";
            document.getElementById("contentoverlaytop").style.left             ="63%";
            document.getElementById("contentoverlaytop").style.marginLeft       ="-340px";

            //<!--  totaal 850 - hoogte flash 200 =  650 --> 20 eraf voor de witte lijn
            document.getElementById("contentoverlaybottom").style.top           ="630px";
            document.getElementById("contentoverlaybottom").style.height        ="200px";
            document.getElementById("contentoverlaybottom").style.width         ="650px";
            document.getElementById("contentoverlaybottom").style.left          ="63%";
            document.getElementById("contentoverlaybottom").style.marginLeft    ="-325px";
            }
            else
            {
            document.getElementById("beitharmenu").style.top        ="  0px";
            document.getElementById("beitharmenu").style.height     ="600px";
            document.getElementById("beitharmenu").style.width      ="800px";
            document.getElementById("beitharmenu").style.left       ="50%";
            document.getElementById("beitharmenu").style.marginLeft ="-400px";

            document.getElementById("contentoverlaytop").style.top              ="30px";
            document.getElementById("contentoverlaytop").style.height           ="125px";
            document.getElementById("contentoverlaytop").style.width            ="475px";
            document.getElementById("contentoverlaytop").style.left             ="63%";
            document.getElementById("contentoverlaytop").style.marginLeft       ="-240px";

             //<!--  totaal 600 - hoogte flash 150 =  450 -->
            document.getElementById("contentoverlaybottom").style.top           ="450px";
            document.getElementById("contentoverlaybottom").style.height        ="150px";
            document.getElementById("contentoverlaybottom").style.width         ="475px";
            document.getElementById("contentoverlaybottom").style.left          ="63%";
            document.getElementById("contentoverlaybottom").style.marginLeft    ="-240px";
            }