alert('只能输入数字');this.value='';}">
if(this.value.match(/^\.\d+$/))this.value=0+this.value;if(this.value.match(/^\.$/))this.value=0;this.o_value=this.value}">
57) && event.keyCode!=46 || /\.\d\d$/.test(value))event.returnValue=false">