dFeatures = 'dialogHeight: 450px; dialogWidth: 1049px; dialogTop: 646px; dialogLeft: 4px; edge: Raised; center: Yes; help: Yes; resizable: Yes; status: Yes;';//default features

modalWin = "";
function xShowModalDialog( sURL, vArguments, sFeatures )
{
if (sURL==null||sURL=='')
{
alert ("Invalid URL input.");
return false;
}
if (vArguments==null||vArguments=='')
{
vArguments='';
}
if (sFeatures==null||sFeatures=='')
{
sFeatures=dFeatures;
}
if (window.navigator.appVersion.indexOf("MSIE")!=-1)
{
window.showModalDialog ( sURL, vArguments, sFeatures );
//window.location.reload(true);
return false;
}
sFeatures = sFeatures.replace(/ /gi,'');
aFeatures = sFeatures.split(";");
sWinFeat = "directories=0,menubar=0,titlebar=0,toolbar=0,";
for ( x in aFeatures )
{
aTmp = aFeatures[x].split(":");
sKey = aTmp[0].toLowerCase();
sVal = aTmp[1];
switch (sKey)
{
case "dialogheight":
sWinFeat += "height="+sVal+",";
pHeight = sVal;
break;
case "dialogwidth":
sWinFeat += "width="+sVal+",";
pWidth = sVal;
break;
case "dialogtop":
sWinFeat += "screenY="+sVal+",";
break;
case "dialogleft":
sWinFeat += "screenX="+sVal+",";
break;
case "resizable":
sWinFeat += "resizable="+sVal+",";
break;
case "status":
sWinFeat += "status="+sVal+",";
break;
case "center":
if ( sVal.toLowerCase() == "yes" )
{
sWinFeat += "screenY="+((screen.availHeight-pHeight)/2)+",";
sWinFeat += "screenX="+((screen.availWidth-pWidth)/2)+",";
}
break;
}
}
modalWin=window.open(String(sURL),"",sWinFeat);
if (vArguments!=null&&vArguments!='')
{
modalWin.dialogArguments=vArguments;
}
}



function open_window(tupagina,w,h,scr) 
{ 
   var altura_popup=h; 
   var H = (screen.height - altura_popup) / 2; 
   var anchura_popup=w; 
   var L = (screen.width - anchura_popup) / 2; 
   pop_up = window.open(tupagina,"Popup","status=no,scrollbars="+scr+",resizable=no,height="+altura_popup+",width="+anchura_popup+",top="+H+",left="+L); 
}