function nahled(url){
open_window('url',url,
            'name','preview',
            'width',300,
            'height',300,
            'screenX',100,
            'screenY',100,
            'top',100,
            'left',100,
            'resizable','yes',
            'status','0'
            );
return;
}



function open_window(){
param = [];
dparam = [];
dialog=false;
url='about:blank';
nameWin='';

param[0]='toolbar=0';
param[1]='width=200';
param[2]='height=200';
param[3]='scrollbars=0';
param[4]='location=0';
param[5]='resizable=0';
param[6]='status=0';
param[7]='screenX=20';
param[8]='screenY=20';
param[9]='left=20';
param[10]='top=20';
param[11]='menubar=0';

dparam[0]='dialogWidth:200px';
dparam[1]='dialogHeight:200px';
dparam[2]='scroll:0';
dparam[3]='resizable:0';
dparam[4]='status:0';
dparam[5]='dialogLeft:20';
dparam[6]='dialogTop:20';
dparam[7]='help:0';



for(var i=0 ;i<arguments.length;i++){
 ar=arguments[i];//.toLowerCase();
 if(ar=='toolbar'){param[0]='toolbar='+arguments[i+1]}
 if(ar=='width'){param[1]='width='+arguments[i+1];dparam[0]='dialogWidth:'+arguments[i+1]+'px'; }
 if(ar=='height'){param[2]='height='+arguments[i+1];dparam[1]='dialogHeight:'+arguments[i+1]+'px';}
 if(ar=='scrollbars'){param[3]='scrollbars='+arguments[i+1];dparam[2]='scroll:'+arguments[i+1];}
 if(ar=='location'){param[4]='location='+arguments[i+1]}
 if(ar=='resizable'){param[5]='resizable='+arguments[i+1];dparam[3]='resizable:'+arguments[i+1];}
 if(ar=='status'){param[6]='status='+arguments[i+1];dparam[4]='status:'+arguments[i+1];}
 if(ar=='screenX'){param[7]='screenX='+arguments[i+1]}
 if(ar=='screenY'){param[8]='screenY='+arguments[i+1]}
 if(ar=='left'){param[9]='left='+arguments[i+1];dparam[5]='dialogLeft='+arguments[i+1];}
 if(ar=='top'){param[10]='top='+arguments[i+1];dparam[6]='dialogTop='+arguments[i+1];}
 if(ar=='menubar'){param[11]='menubar='+arguments[i+1]}
 if(ar=='url'){url=arguments[i+1]}
 if(ar=='name'){nameWin=arguments[i+1]}
 if(ar=='dialog'){dialog=true}
}
p=param.join(',');
if(!dialog)
openWin=window.open(url,nameWin,p);
else
openWin = showModalDialog(url,nameWin,dparam.join(';'));
}