function cleanSearch(str) {

var charpos = str.search("[^A-Za-z0-9\-]"); 

//alert(str + ' : ' + charpos);

	if (charpos != -1) 
	{
		myRegExp = /[^A-Za-z0-9\-\s]/g;
		str = str.replace(myRegExp,'');
		
	}
	
reg = /[\-\-]+/g;
str = str.replace(reg,'-');		
document.form1.search_txt.value = str;

//alert('clean_ : ' +str);



}