function html_trans(str) {
 str = str.replace(/\r/g,"");
 str = str.replace(/on(load|click|dbclick|mouseover|mousedown|mouseup)="<^">+"/ig,"");
 str = str.replace(/>*?＞(<\w\w>*?)＜\/script＞/ig,"");
 
 str = str.replace(/>+href="(<^">+)"<^＞>*＞(.*?)＜\/a＞/ig,"\n$2\n");
 
 str = str.replace(/>+color=(<^ ＞>+)<^＞>*＞(.*?)＜\/font＞/ig,"\n$2\n");
 
 str = str.replace(/>+src="(<^">+)"<^＞>*＞/ig,"\n$1\n");
 
 str = str.replace(/＜(<\/>?)b＞/ig,"<$1b>");
 str = str.replace(/＜(<\/>?)strong＞/ig,"<$1b>");
 str = str.replace(/＜(<\/>?)u＞/ig,"<$1u>");
 str = str.replace(/＜(<\/>?)i＞/ig,"<$1i>");
 
 str = str.replace(/ /g," ");
 str = str.replace(/&/g,"&");
 str = str.replace(/"/g,"\"");
 str = str.replace(/＜/g,"＜");
 str = str.replace(/＞/g,"＞");
 
 str = str.replace(/
/ig,"\n");
 str = str.replace(/＜<^＞>*?＞/g,"");
 str = str.replace(/\>+)\>\n(\\1\<\/img\>)\n\<\/url\>/g,"$2");
 str = str.replace(/\n+/g,"\n");
 
 return str;
}